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Finding the Fourth Proportional to 101,285.10, 151,927.65 and 99,729.90

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Solution

The fourth proportional to 101,285.10, 151,927.65 and 99,729.90 is: 149,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,285.10 : 151,927.65 = 99,729.90 : x
  2. Step 2: Convert to fraction form
    101,285.10/151,927.65 = 99,729.90/x
  3. Step 3: Cross multiply
    101,285.10x = 151,927.65 × 99,729.90
  4. Step 4: Simplify right side
    101,285.10x = 15,151,729,341.74
  5. Step 5: Solve for x
    x = 15,151,729,341.74/101,285.10
  6. Step 6: Final answer
    x = 149,594.85

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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.