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Finding the Fourth Proportional to 124,311.40, 186,531.90 and 54,197.80

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Solution

The fourth proportional to 124,311.40, 186,531.90 and 54,197.80 is: 81,324.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.40 : 186,531.90 = 54,197.80 : x
  2. Step 2: Convert to fraction form
    124,311.40/186,531.90 = 54,197.80/x
  3. Step 3: Cross multiply
    124,311.40x = 186,531.90 × 54,197.80
  4. Step 4: Simplify right side
    124,311.40x = 10,109,618,609.82
  5. Step 5: Solve for x
    x = 10,109,618,609.82/124,311.40
  6. Step 6: Final answer
    x = 81,324.95

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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.