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Finding the Fourth Proportional to 144,433.60, 216,778.40 and 85,195.20

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Solution

The fourth proportional to 144,433.60, 216,778.40 and 85,195.20 is: 127,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,433.60 : 216,778.40 = 85,195.20 : x
  2. Step 2: Convert to fraction form
    144,433.60/216,778.40 = 85,195.20/x
  3. Step 3: Cross multiply
    144,433.60x = 216,778.40 × 85,195.20
  4. Step 4: Simplify right side
    144,433.60x = 18,468,479,143.68
  5. Step 5: Solve for x
    x = 18,468,479,143.68/144,433.60
  6. Step 6: Final answer
    x = 127,868.30

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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.