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Finding the Fourth Proportional to 187,272, 280,935.95 and 68,934.24

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Solution

The fourth proportional to 187,272, 280,935.95 and 68,934.24 is: 103,411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,272 : 280,935.95 = 68,934.24 : x
  2. Step 2: Convert to fraction form
    187,272/280,935.95 = 68,934.24/x
  3. Step 3: Cross multiply
    187,272x = 280,935.95 × 68,934.24
  4. Step 4: Simplify right side
    187,272x = 19,366,105,857.26
  5. Step 5: Solve for x
    x = 19,366,105,857.26/187,272
  6. Step 6: Final answer
    x = 103,411.65

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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.