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Finding the Fourth Proportional to 100,366.32, 138,485.88 and 59,522.88

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Solution

The fourth proportional to 100,366.32, 138,485.88 and 59,522.88 is: 82,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,366.32 : 138,485.88 = 59,522.88 : x
  2. Step 2: Convert to fraction form
    100,366.32/138,485.88 = 59,522.88/x
  3. Step 3: Cross multiply
    100,366.32x = 138,485.88 × 59,522.88
  4. Step 4: Simplify right side
    100,366.32x = 8,243,078,416.93
  5. Step 5: Solve for x
    x = 8,243,078,416.93/100,366.32
  6. Step 6: Final answer
    x = 82,129.93

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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.