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Finding the Fourth Proportional to 80,468.48, 120,899.52 and 75,992.40

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Solution

The fourth proportional to 80,468.48, 120,899.52 and 75,992.40 is: 114,174.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,468.48 : 120,899.52 = 75,992.40 : x
  2. Step 2: Convert to fraction form
    80,468.48/120,899.52 = 75,992.40/x
  3. Step 3: Cross multiply
    80,468.48x = 120,899.52 × 75,992.40
  4. Step 4: Simplify right side
    80,468.48x = 9,187,444,683.65
  5. Step 5: Solve for x
    x = 9,187,444,683.65/80,468.48
  6. Step 6: Final answer
    x = 114,174.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.