Home / 138,535.36-191,248.32-90,861.76

Finding the Fourth Proportional to 138,535.36, 191,248.32 and 90,861.76

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Solution

The fourth proportional to 138,535.36, 191,248.32 and 90,861.76 is: 125,434.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,535.36 : 191,248.32 = 90,861.76 : x
  2. Step 2: Convert to fraction form
    138,535.36/191,248.32 = 90,861.76/x
  3. Step 3: Cross multiply
    138,535.36x = 191,248.32 × 90,861.76
  4. Step 4: Simplify right side
    138,535.36x = 17,377,158,952.24
  5. Step 5: Solve for x
    x = 17,377,158,952.24/138,535.36
  6. Step 6: Final answer
    x = 125,434.83

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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.