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Finding the Fourth Proportional to 141,616.80, 212,425.20 and 99,223.20

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Solution

The fourth proportional to 141,616.80, 212,425.20 and 99,223.20 is: 148,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,616.80 : 212,425.20 = 99,223.20 : x
  2. Step 2: Convert to fraction form
    141,616.80/212,425.20 = 99,223.20/x
  3. Step 3: Cross multiply
    141,616.80x = 212,425.20 × 99,223.20
  4. Step 4: Simplify right side
    141,616.80x = 21,077,508,104.64
  5. Step 5: Solve for x
    x = 21,077,508,104.64/141,616.80
  6. Step 6: Final answer
    x = 148,834.80

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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.