Home / 125,136.29-172,691.59-76,077.83

Finding the Fourth Proportional to 125,136.29, 172,691.59 and 76,077.83

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Solution

The fourth proportional to 125,136.29, 172,691.59 and 76,077.83 is: 104,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,136.29 : 172,691.59 = 76,077.83 : x
  2. Step 2: Convert to fraction form
    125,136.29/172,691.59 = 76,077.83/x
  3. Step 3: Cross multiply
    125,136.29x = 172,691.59 × 76,077.83
  4. Step 4: Simplify right side
    125,136.29x = 13,138,001,426.45
  5. Step 5: Solve for x
    x = 13,138,001,426.45/125,136.29
  6. Step 6: Final answer
    x = 104,989.54

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1.5x scale

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.