Home / 91,545.39-137,156.58-80,173.85

Finding the Fourth Proportional to 91,545.39, 137,156.58 and 80,173.85

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Solution

The fourth proportional to 91,545.39, 137,156.58 and 80,173.85 is: 120,119.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,545.39 : 137,156.58 = 80,173.85 : x
  2. Step 2: Convert to fraction form
    91,545.39/137,156.58 = 80,173.85/x
  3. Step 3: Cross multiply
    91,545.39x = 137,156.58 × 80,173.85
  4. Step 4: Simplify right side
    91,545.39x = 10,996,370,385.65
  5. Step 5: Solve for x
    x = 10,996,370,385.65/91,545.39
  6. Step 6: Final answer
    x = 120,119.32

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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.