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Finding the Fourth Proportional to 100,265.52, 138,366.44 and 59,980.96

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Solution

The fourth proportional to 100,265.52, 138,366.44 and 59,980.96 is: 82,773.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,265.52 : 138,366.44 = 59,980.96 : x
  2. Step 2: Convert to fraction form
    100,265.52/138,366.44 = 59,980.96/x
  3. Step 3: Cross multiply
    100,265.52x = 138,366.44 × 59,980.96
  4. Step 4: Simplify right side
    100,265.52x = 8,299,351,902.98
  5. Step 5: Solve for x
    x = 8,299,351,902.98/100,265.52
  6. Step 6: Final answer
    x = 82,773.74

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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.