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Finding the Fourth Proportional to 145,729.18, 218,506.17 and 98,839.90

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Solution

The fourth proportional to 145,729.18, 218,506.17 and 98,839.90 is: 148,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,729.18 : 218,506.17 = 98,839.90 : x
  2. Step 2: Convert to fraction form
    145,729.18/218,506.17 = 98,839.90/x
  3. Step 3: Cross multiply
    145,729.18x = 218,506.17 × 98,839.90
  4. Step 4: Simplify right side
    145,729.18x = 21,597,127,992.18
  5. Step 5: Solve for x
    x = 21,597,127,992.18/145,729.18
  6. Step 6: Final answer
    x = 148,200.44

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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.