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Finding the Fourth Proportional to 80,739.64, 120,592.67 and 73,129.48

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Solution

The fourth proportional to 80,739.64, 120,592.67 and 73,129.48 is: 109,226.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,739.64 : 120,592.67 = 73,129.48 : x
  2. Step 2: Convert to fraction form
    80,739.64/120,592.67 = 73,129.48/x
  3. Step 3: Cross multiply
    80,739.64x = 120,592.67 × 73,129.48
  4. Step 4: Simplify right side
    80,739.64x = 8,818,879,248.91
  5. Step 5: Solve for x
    x = 8,818,879,248.91/80,739.64
  6. Step 6: Final answer
    x = 109,226.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.