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Finding the Fourth Proportional to 202,874.88, 279,962.28 and 112,235.88

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Solution

The fourth proportional to 202,874.88, 279,962.28 and 112,235.88 is: 154,882.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,874.88 : 279,962.28 = 112,235.88 : x
  2. Step 2: Convert to fraction form
    202,874.88/279,962.28 = 112,235.88/x
  3. Step 3: Cross multiply
    202,874.88x = 279,962.28 × 112,235.88
  4. Step 4: Simplify right side
    202,874.88x = 31,421,812,862.61
  5. Step 5: Solve for x
    x = 31,421,812,862.61/202,874.88
  6. Step 6: Final answer
    x = 154,882.72

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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.