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Finding the Fourth Proportional to 100,524.39, 138,770.89 and 58,074.72

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Solution

The fourth proportional to 100,524.39, 138,770.89 and 58,074.72 is: 80,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,524.39 : 138,770.89 = 58,074.72 : x
  2. Step 2: Convert to fraction form
    100,524.39/138,770.89 = 58,074.72/x
  3. Step 3: Cross multiply
    100,524.39x = 138,770.89 × 58,074.72
  4. Step 4: Simplify right side
    100,524.39x = 8,059,080,435.71
  5. Step 5: Solve for x
    x = 8,059,080,435.71/100,524.39
  6. Step 6: Final answer
    x = 80,170.40

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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.