Home / 138,601.92-191,270.76-74,939.76

Finding the Fourth Proportional to 138,601.92, 191,270.76 and 74,939.76

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Solution

The fourth proportional to 138,601.92, 191,270.76 and 74,939.76 is: 103,416.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,601.92 : 191,270.76 = 74,939.76 : x
  2. Step 2: Convert to fraction form
    138,601.92/191,270.76 = 74,939.76/x
  3. Step 3: Cross multiply
    138,601.92x = 191,270.76 × 74,939.76
  4. Step 4: Simplify right side
    138,601.92x = 14,333,784,849.42
  5. Step 5: Solve for x
    x = 14,333,784,849.42/138,601.92
  6. Step 6: Final answer
    x = 103,416.93

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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.