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Finding the Fourth Proportional to 145,422.59, 218,250.54 and 75,321.95

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Solution

The fourth proportional to 145,422.59, 218,250.54 and 75,321.95 is: 113,043.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,422.59 : 218,250.54 = 75,321.95 : x
  2. Step 2: Convert to fraction form
    145,422.59/218,250.54 = 75,321.95/x
  3. Step 3: Cross multiply
    145,422.59x = 218,250.54 × 75,321.95
  4. Step 4: Simplify right side
    145,422.59x = 16,439,055,170.10
  5. Step 5: Solve for x
    x = 16,439,055,170.10/145,422.59
  6. Step 6: Final answer
    x = 113,043.34

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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.