Home / 156,926.62-216,560.15-85,306.78

Finding the Fourth Proportional to 156,926.62, 216,560.15 and 85,306.78

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Solution

The fourth proportional to 156,926.62, 216,560.15 and 85,306.78 is: 117,724.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,926.62 : 216,560.15 = 85,306.78 : x
  2. Step 2: Convert to fraction form
    156,926.62/216,560.15 = 85,306.78/x
  3. Step 3: Cross multiply
    156,926.62x = 216,560.15 × 85,306.78
  4. Step 4: Simplify right side
    156,926.62x = 18,474,049,072.82
  5. Step 5: Solve for x
    x = 18,474,049,072.82/156,926.62
  6. Step 6: Final answer
    x = 117,724.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.