Home / 130,729.22-180,402.82-74,139.38

Finding the Fourth Proportional to 130,729.22, 180,402.82 and 74,139.38

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Solution

The fourth proportional to 130,729.22, 180,402.82 and 74,139.38 is: 102,310.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,729.22 : 180,402.82 = 74,139.38 : x
  2. Step 2: Convert to fraction form
    130,729.22/180,402.82 = 74,139.38/x
  3. Step 3: Cross multiply
    130,729.22x = 180,402.82 × 74,139.38
  4. Step 4: Simplify right side
    130,729.22x = 13,374,951,952.34
  5. Step 5: Solve for x
    x = 13,374,951,952.34/130,729.22
  6. Step 6: Final answer
    x = 102,310.35

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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.