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Finding the Fourth Proportional to 154,230.60, 231,345.90 and 71,124.60

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Solution

The fourth proportional to 154,230.60, 231,345.90 and 71,124.60 is: 106,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,230.60 : 231,345.90 = 71,124.60 : x
  2. Step 2: Convert to fraction form
    154,230.60/231,345.90 = 71,124.60/x
  3. Step 3: Cross multiply
    154,230.60x = 231,345.90 × 71,124.60
  4. Step 4: Simplify right side
    154,230.60x = 16,454,384,599.14
  5. Step 5: Solve for x
    x = 16,454,384,599.14/154,230.60
  6. Step 6: Final answer
    x = 106,686.90

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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.