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Finding the Fourth Proportional to 187,332.62, 280,867.51 and 68,988.79

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Solution

The fourth proportional to 187,332.62, 280,867.51 and 68,988.79 is: 103,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,332.62 : 280,867.51 = 68,988.79 : x
  2. Step 2: Convert to fraction form
    187,332.62/280,867.51 = 68,988.79/x
  3. Step 3: Cross multiply
    187,332.62x = 280,867.51 × 68,988.79
  4. Step 4: Simplify right side
    187,332.62x = 19,376,709,049.28
  5. Step 5: Solve for x
    x = 19,376,709,049.28/187,332.62
  6. Step 6: Final answer
    x = 103,434.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.