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Finding the Fourth Proportional to 143,480.98, 215,116.98 and 67,553.20

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Solution

The fourth proportional to 143,480.98, 215,116.98 and 67,553.20 is: 101,280.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,480.98 : 215,116.98 = 67,553.20 : x
  2. Step 2: Convert to fraction form
    143,480.98/215,116.98 = 67,553.20/x
  3. Step 3: Cross multiply
    143,480.98x = 215,116.98 × 67,553.20
  4. Step 4: Simplify right side
    143,480.98x = 14,531,840,373.34
  5. Step 5: Solve for x
    x = 14,531,840,373.34/143,480.98
  6. Step 6: Final answer
    x = 101,280.60

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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.