Home / 129,375.08-178,478.61-93,508.28

Finding the Fourth Proportional to 129,375.08, 178,478.61 and 93,508.28

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Solution

The fourth proportional to 129,375.08, 178,478.61 and 93,508.28 is: 128,998.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,375.08 : 178,478.61 = 93,508.28 : x
  2. Step 2: Convert to fraction form
    129,375.08/178,478.61 = 93,508.28/x
  3. Step 3: Cross multiply
    129,375.08x = 178,478.61 × 93,508.28
  4. Step 4: Simplify right side
    129,375.08x = 16,689,227,837.89
  5. Step 5: Solve for x
    x = 16,689,227,837.89/129,375.08
  6. Step 6: Final answer
    x = 128,998.78

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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.