Home / 127,462,745,778.21-175,977,972,298.23-81,139,310,391.37

Finding the Fourth Proportional to 127,462,745,778.21, 175,977,972,298.23 and 81,139,310,391.37

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Solution

The fourth proportional to 127,462,745,778.21, 175,977,972,298.23 and 81,139,310,391.37 is: 112,022,781,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,462,745,778.21 : 175,977,972,298.23 = 81,139,310,391.37 : x
  2. Step 2: Convert to fraction form
    127,462,745,778.21/175,977,972,298.23 = 81,139,310,391.37/x
  3. Step 3: Cross multiply
    127,462,745,778.21x = 175,977,972,298.23 × 81,139,310,391.37
  4. Step 4: Simplify right side
    127,462,745,778.21x = 14,278,731,316,350,347,640,832
  5. Step 5: Solve for x
    x = 14,278,731,316,350,347,640,832/127,462,745,778.21
  6. Step 6: Final answer
    x = 112,022,781,473.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.