Home / 127,139.45-175,463.20-69,788.48

Finding the Fourth Proportional to 127,139.45, 175,463.20 and 69,788.48

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Solution

The fourth proportional to 127,139.45, 175,463.20 and 69,788.48 is: 96,314.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,139.45 : 175,463.20 = 69,788.48 : x
  2. Step 2: Convert to fraction form
    127,139.45/175,463.20 = 69,788.48/x
  3. Step 3: Cross multiply
    127,139.45x = 175,463.20 × 69,788.48
  4. Step 4: Simplify right side
    127,139.45x = 12,245,310,293.74
  5. Step 5: Solve for x
    x = 12,245,310,293.74/127,139.45
  6. Step 6: Final answer
    x = 96,314.01

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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.