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Finding the Fourth Proportional to 100,267.52, 138,369.20 and 59,982.96

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Solution

The fourth proportional to 100,267.52, 138,369.20 and 59,982.96 is: 82,776.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,267.52 : 138,369.20 = 59,982.96 : x
  2. Step 2: Convert to fraction form
    100,267.52/138,369.20 = 59,982.96/x
  3. Step 3: Cross multiply
    100,267.52x = 138,369.20 × 59,982.96
  4. Step 4: Simplify right side
    100,267.52x = 8,299,794,188.83
  5. Step 5: Solve for x
    x = 8,299,794,188.83/100,267.52
  6. Step 6: Final answer
    x = 82,776.50

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1.5x scale

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.