Home / 91,001.27-125,545.34-55,178.21

Finding the Fourth Proportional to 91,001.27, 125,545.34 and 55,178.21

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Solution

The fourth proportional to 91,001.27, 125,545.34 and 55,178.21 is: 76,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,001.27 : 125,545.34 = 55,178.21 : x
  2. Step 2: Convert to fraction form
    91,001.27/125,545.34 = 55,178.21/x
  3. Step 3: Cross multiply
    91,001.27x = 125,545.34 × 55,178.21
  4. Step 4: Simplify right side
    91,001.27x = 6,927,367,586.85
  5. Step 5: Solve for x
    x = 6,927,367,586.85/91,001.27
  6. Step 6: Final answer
    x = 76,123.85

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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.