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Finding the Fourth Proportional to 101,319.20, 151,978.92 and 26,439.30

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Solution

The fourth proportional to 101,319.20, 151,978.92 and 26,439.30 is: 39,658.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,319.20 : 151,978.92 = 26,439.30 : x
  2. Step 2: Convert to fraction form
    101,319.20/151,978.92 = 26,439.30/x
  3. Step 3: Cross multiply
    101,319.20x = 151,978.92 × 26,439.30
  4. Step 4: Simplify right side
    101,319.20x = 4,018,216,259.56
  5. Step 5: Solve for x
    x = 4,018,216,259.56/101,319.20
  6. Step 6: Final answer
    x = 39,658.98

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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.