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Finding the Fourth Proportional to 144,422.55, 216,565.46 and 84,468.38

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Solution

The fourth proportional to 144,422.55, 216,565.46 and 84,468.38 is: 126,662.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,422.55 : 216,565.46 = 84,468.38 : x
  2. Step 2: Convert to fraction form
    144,422.55/216,565.46 = 84,468.38/x
  3. Step 3: Cross multiply
    144,422.55x = 216,565.46 × 84,468.38
  4. Step 4: Simplify right side
    144,422.55x = 18,292,932,064.99
  5. Step 5: Solve for x
    x = 18,292,932,064.99/144,422.55
  6. Step 6: Final answer
    x = 126,662.57

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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.