Home / 102,398.73-141,293.13-57,066.78

Finding the Fourth Proportional to 102,398.73, 141,293.13 and 57,066.78

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Solution

The fourth proportional to 102,398.73, 141,293.13 and 57,066.78 is: 78,742.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,398.73 : 141,293.13 = 57,066.78 : x
  2. Step 2: Convert to fraction form
    102,398.73/141,293.13 = 57,066.78/x
  3. Step 3: Cross multiply
    102,398.73x = 141,293.13 × 57,066.78
  4. Step 4: Simplify right side
    102,398.73x = 8,063,143,965.22
  5. Step 5: Solve for x
    x = 8,063,143,965.22/102,398.73
  6. Step 6: Final answer
    x = 78,742.62

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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.