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Finding the Fourth Proportional to 154,957.92, 231,938.56 and 79,975.92

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Solution

The fourth proportional to 154,957.92, 231,938.56 and 79,975.92 is: 119,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,957.92 : 231,938.56 = 79,975.92 : x
  2. Step 2: Convert to fraction form
    154,957.92/231,938.56 = 79,975.92/x
  3. Step 3: Cross multiply
    154,957.92x = 231,938.56 × 79,975.92
  4. Step 4: Simplify right side
    154,957.92x = 18,549,499,719.48
  5. Step 5: Solve for x
    x = 18,549,499,719.48/154,957.92
  6. Step 6: Final answer
    x = 119,706.69

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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.