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Finding the Fourth Proportional to 100,279.56, 138,385.74 and 59,994.96

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Solution

The fourth proportional to 100,279.56, 138,385.74 and 59,994.96 is: 82,793.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,279.56 : 138,385.74 = 59,994.96 : x
  2. Step 2: Convert to fraction form
    100,279.56/138,385.74 = 59,994.96/x
  3. Step 3: Cross multiply
    100,279.56x = 138,385.74 × 59,994.96
  4. Step 4: Simplify right side
    100,279.56x = 8,302,446,935.87
  5. Step 5: Solve for x
    x = 8,302,446,935.87/100,279.56
  6. Step 6: Final answer
    x = 82,793.01

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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.