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Finding the Fourth Proportional to 125,307.52, 172,926.12 and 68,715.16

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Solution

The fourth proportional to 125,307.52, 172,926.12 and 68,715.16 is: 94,827.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,307.52 : 172,926.12 = 68,715.16 : x
  2. Step 2: Convert to fraction form
    125,307.52/172,926.12 = 68,715.16/x
  3. Step 3: Cross multiply
    125,307.52x = 172,926.12 × 68,715.16
  4. Step 4: Simplify right side
    125,307.52x = 11,882,646,003.98
  5. Step 5: Solve for x
    x = 11,882,646,003.98/125,307.52
  6. Step 6: Final answer
    x = 94,827.88

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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.