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Finding the Fourth Proportional to 148,963.20, 223,531.20 and 55,478.40

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Solution

The fourth proportional to 148,963.20, 223,531.20 and 55,478.40 is: 83,249.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,963.20 : 223,531.20 = 55,478.40 : x
  2. Step 2: Convert to fraction form
    148,963.20/223,531.20 = 55,478.40/x
  3. Step 3: Cross multiply
    148,963.20x = 223,531.20 × 55,478.40
  4. Step 4: Simplify right side
    148,963.20x = 12,401,153,326.08
  5. Step 5: Solve for x
    x = 12,401,153,326.08/148,963.20
  6. Step 6: Final answer
    x = 83,249.78

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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.