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Finding the Fourth Proportional to 107,691.34, 160,730.57 and 100,605.46

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Solution

The fourth proportional to 107,691.34, 160,730.57 and 100,605.46 is: 150,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,691.34 : 160,730.57 = 100,605.46 : x
  2. Step 2: Convert to fraction form
    107,691.34/160,730.57 = 100,605.46/x
  3. Step 3: Cross multiply
    107,691.34x = 160,730.57 × 100,605.46
  4. Step 4: Simplify right side
    107,691.34x = 16,170,372,930.91
  5. Step 5: Solve for x
    x = 16,170,372,930.91/107,691.34
  6. Step 6: Final answer
    x = 150,154.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.