Home / 138,864.55-191,632.13-75,200.89

Finding the Fourth Proportional to 138,864.55, 191,632.13 and 75,200.89

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Solution

The fourth proportional to 138,864.55, 191,632.13 and 75,200.89 is: 103,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,864.55 : 191,632.13 = 75,200.89 : x
  2. Step 2: Convert to fraction form
    138,864.55/191,632.13 = 75,200.89/x
  3. Step 3: Cross multiply
    138,864.55x = 191,632.13 × 75,200.89
  4. Step 4: Simplify right side
    138,864.55x = 14,410,906,352.59
  5. Step 5: Solve for x
    x = 14,410,906,352.59/138,864.55
  6. Step 6: Final answer
    x = 103,776.71

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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.