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Finding the Fourth Proportional to 156,689.70, 235,034.55 and 154,356.90

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Solution

The fourth proportional to 156,689.70, 235,034.55 and 154,356.90 is: 231,535.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,689.70 : 235,034.55 = 154,356.90 : x
  2. Step 2: Convert to fraction form
    156,689.70/235,034.55 = 154,356.90/x
  3. Step 3: Cross multiply
    156,689.70x = 235,034.55 × 154,356.90
  4. Step 4: Simplify right side
    156,689.70x = 36,279,204,530.90
  5. Step 5: Solve for x
    x = 36,279,204,530.90/156,689.70
  6. Step 6: Final answer
    x = 231,535.35

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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.