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Finding the Fourth Proportional to 149,729.80, 224,594.70 and 140,981.80

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Solution

The fourth proportional to 149,729.80, 224,594.70 and 140,981.80 is: 211,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,729.80 : 224,594.70 = 140,981.80 : x
  2. Step 2: Convert to fraction form
    149,729.80/224,594.70 = 140,981.80/x
  3. Step 3: Cross multiply
    149,729.80x = 224,594.70 × 140,981.80
  4. Step 4: Simplify right side
    149,729.80x = 31,663,765,076.46
  5. Step 5: Solve for x
    x = 31,663,765,076.46/149,729.80
  6. Step 6: Final answer
    x = 211,472.70

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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.