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Finding the Fourth Proportional to 192,082.60, 288,123.90 and 145,426.60

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Solution

The fourth proportional to 192,082.60, 288,123.90 and 145,426.60 is: 218,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,082.60 : 288,123.90 = 145,426.60 : x
  2. Step 2: Convert to fraction form
    192,082.60/288,123.90 = 145,426.60/x
  3. Step 3: Cross multiply
    192,082.60x = 288,123.90 × 145,426.60
  4. Step 4: Simplify right side
    192,082.60x = 41,900,879,155.74
  5. Step 5: Solve for x
    x = 41,900,879,155.74/192,082.60
  6. Step 6: Final answer
    x = 218,139.90

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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.