Home / 124,819.68-172,234.80-74,508

Finding the Fourth Proportional to 124,819.68, 172,234.80 and 74,508

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Solution

The fourth proportional to 124,819.68, 172,234.80 and 74,508 is: 102,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,819.68 : 172,234.80 = 74,508 : x
  2. Step 2: Convert to fraction form
    124,819.68/172,234.80 = 74,508/x
  3. Step 3: Cross multiply
    124,819.68x = 172,234.80 × 74,508
  4. Step 4: Simplify right side
    124,819.68x = 12,832,870,478.40
  5. Step 5: Solve for x
    x = 12,832,870,478.40/124,819.68
  6. Step 6: Final answer
    x = 102,811.28

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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.