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Finding the Fourth Proportional to 91,123.62, 136,731.53 and 61,479.17

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Solution

The fourth proportional to 91,123.62, 136,731.53 and 61,479.17 is: 92,249.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,123.62 : 136,731.53 = 61,479.17 : x
  2. Step 2: Convert to fraction form
    91,123.62/136,731.53 = 61,479.17/x
  3. Step 3: Cross multiply
    91,123.62x = 136,731.53 × 61,479.17
  4. Step 4: Simplify right side
    91,123.62x = 8,406,140,977.23
  5. Step 5: Solve for x
    x = 8,406,140,977.23/91,123.62
  6. Step 6: Final answer
    x = 92,249.86

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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.