Home / 138,766.68-191,499.42-75,105.84

Finding the Fourth Proportional to 138,766.68, 191,499.42 and 75,105.84

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Solution

The fourth proportional to 138,766.68, 191,499.42 and 75,105.84 is: 103,646.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,766.68 : 191,499.42 = 75,105.84 : x
  2. Step 2: Convert to fraction form
    138,766.68/191,499.42 = 75,105.84/x
  3. Step 3: Cross multiply
    138,766.68x = 191,499.42 × 75,105.84
  4. Step 4: Simplify right side
    138,766.68x = 14,382,724,798.61
  5. Step 5: Solve for x
    x = 14,382,724,798.61/138,766.68
  6. Step 6: Final answer
    x = 103,646.82

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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.