Home / 145,982.70-218,974.05-83,601.90

Finding the Fourth Proportional to 145,982.70, 218,974.05 and 83,601.90

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Solution

The fourth proportional to 145,982.70, 218,974.05 and 83,601.90 is: 125,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,982.70 : 218,974.05 = 83,601.90 : x
  2. Step 2: Convert to fraction form
    145,982.70/218,974.05 = 83,601.90/x
  3. Step 3: Cross multiply
    145,982.70x = 218,974.05 × 83,601.90
  4. Step 4: Simplify right side
    145,982.70x = 18,306,646,630.70
  5. Step 5: Solve for x
    x = 18,306,646,630.70/145,982.70
  6. Step 6: Final answer
    x = 125,402.85

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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.