Home / 129,096.31-178,149.35-71,734.15

Finding the Fourth Proportional to 129,096.31, 178,149.35 and 71,734.15

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Solution

The fourth proportional to 129,096.31, 178,149.35 and 71,734.15 is: 98,991.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,096.31 : 178,149.35 = 71,734.15 : x
  2. Step 2: Convert to fraction form
    129,096.31/178,149.35 = 71,734.15/x
  3. Step 3: Cross multiply
    129,096.31x = 178,149.35 × 71,734.15
  4. Step 4: Simplify right side
    129,096.31x = 12,779,391,929.26
  5. Step 5: Solve for x
    x = 12,779,391,929.26/129,096.31
  6. Step 6: Final answer
    x = 98,991.15

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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.