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Finding the Fourth Proportional to 145,425.60, 218,138.40 and 95,659.20

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Solution

The fourth proportional to 145,425.60, 218,138.40 and 95,659.20 is: 143,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,425.60 : 218,138.40 = 95,659.20 : x
  2. Step 2: Convert to fraction form
    145,425.60/218,138.40 = 95,659.20/x
  3. Step 3: Cross multiply
    145,425.60x = 218,138.40 × 95,659.20
  4. Step 4: Simplify right side
    145,425.60x = 20,866,944,833.28
  5. Step 5: Solve for x
    x = 20,866,944,833.28/145,425.60
  6. Step 6: Final answer
    x = 143,488.80

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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.