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Finding the Fourth Proportional to 154,613.80, 231,920.70 and 119,621.80

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Solution

The fourth proportional to 154,613.80, 231,920.70 and 119,621.80 is: 179,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,613.80 : 231,920.70 = 119,621.80 : x
  2. Step 2: Convert to fraction form
    154,613.80/231,920.70 = 119,621.80/x
  3. Step 3: Cross multiply
    154,613.80x = 231,920.70 × 119,621.80
  4. Step 4: Simplify right side
    154,613.80x = 27,742,771,591.26
  5. Step 5: Solve for x
    x = 27,742,771,591.26/154,613.80
  6. Step 6: Final answer
    x = 179,432.70

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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.