Home / 125,136.90-172,704.08-70,691.37

Finding the Fourth Proportional to 125,136.90, 172,704.08 and 70,691.37

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Solution

The fourth proportional to 125,136.90, 172,704.08 and 70,691.37 is: 97,562.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,136.90 : 172,704.08 = 70,691.37 : x
  2. Step 2: Convert to fraction form
    125,136.90/172,704.08 = 70,691.37/x
  3. Step 3: Cross multiply
    125,136.90x = 172,704.08 × 70,691.37
  4. Step 4: Simplify right side
    125,136.90x = 12,208,688,019.79
  5. Step 5: Solve for x
    x = 12,208,688,019.79/125,136.90
  6. Step 6: Final answer
    x = 97,562.65

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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.