Home / 137,248.92-189,403.47-76,819.56

Finding the Fourth Proportional to 137,248.92, 189,403.47 and 76,819.56

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Solution

The fourth proportional to 137,248.92, 189,403.47 and 76,819.56 is: 106,010.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,248.92 : 189,403.47 = 76,819.56 : x
  2. Step 2: Convert to fraction form
    137,248.92/189,403.47 = 76,819.56/x
  3. Step 3: Cross multiply
    137,248.92x = 189,403.47 × 76,819.56
  4. Step 4: Simplify right side
    137,248.92x = 14,549,891,227.87
  5. Step 5: Solve for x
    x = 14,549,891,227.87/137,248.92
  6. Step 6: Final answer
    x = 106,010.97

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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.