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Finding the Fourth Proportional to 144,217.40, 198,738.84 and 103,854.90

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Solution

The fourth proportional to 144,217.40, 198,738.84 and 103,854.90 is: 143,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,217.40 : 198,738.84 = 103,854.90 : x
  2. Step 2: Convert to fraction form
    144,217.40/198,738.84 = 103,854.90/x
  3. Step 3: Cross multiply
    144,217.40x = 198,738.84 × 103,854.90
  4. Step 4: Simplify right side
    144,217.40x = 20,640,002,354.32
  5. Step 5: Solve for x
    x = 20,640,002,354.32/144,217.40
  6. Step 6: Final answer
    x = 143,117.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.