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Finding the Fourth Proportional to 102,687.70, 154,031.55 and 101,305.30

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Solution

The fourth proportional to 102,687.70, 154,031.55 and 101,305.30 is: 151,957.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,687.70 : 154,031.55 = 101,305.30 : x
  2. Step 2: Convert to fraction form
    102,687.70/154,031.55 = 101,305.30/x
  3. Step 3: Cross multiply
    102,687.70x = 154,031.55 × 101,305.30
  4. Step 4: Simplify right side
    102,687.70x = 15,604,212,382.22
  5. Step 5: Solve for x
    x = 15,604,212,382.22/102,687.70
  6. Step 6: Final answer
    x = 151,957.95

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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.