Home / 91,158.30-136,737.45-51,136.20

Finding the Fourth Proportional to 91,158.30, 136,737.45 and 51,136.20

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Solution

The fourth proportional to 91,158.30, 136,737.45 and 51,136.20 is: 76,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,158.30 : 136,737.45 = 51,136.20 : x
  2. Step 2: Convert to fraction form
    91,158.30/136,737.45 = 51,136.20/x
  3. Step 3: Cross multiply
    91,158.30x = 136,737.45 × 51,136.20
  4. Step 4: Simplify right side
    91,158.30x = 6,992,233,590.69
  5. Step 5: Solve for x
    x = 6,992,233,590.69/91,158.30
  6. Step 6: Final answer
    x = 76,704.30

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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.