Home / 127,885.47-176,483.12-76,899.75

Finding the Fourth Proportional to 127,885.47, 176,483.12 and 76,899.75

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Solution

The fourth proportional to 127,885.47, 176,483.12 and 76,899.75 is: 106,122.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,885.47 : 176,483.12 = 76,899.75 : x
  2. Step 2: Convert to fraction form
    127,885.47/176,483.12 = 76,899.75/x
  3. Step 3: Cross multiply
    127,885.47x = 176,483.12 × 76,899.75
  4. Step 4: Simplify right side
    127,885.47x = 13,571,507,422.72
  5. Step 5: Solve for x
    x = 13,571,507,422.72/127,885.47
  6. Step 6: Final answer
    x = 106,122.36

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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.