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Finding the Fourth Proportional to 103,337.21, 154,966.48 and 61,229.18

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Solution

The fourth proportional to 103,337.21, 154,966.48 and 61,229.18 is: 91,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,337.21 : 154,966.48 = 61,229.18 : x
  2. Step 2: Convert to fraction form
    103,337.21/154,966.48 = 61,229.18/x
  3. Step 3: Cross multiply
    103,337.21x = 154,966.48 × 61,229.18
  4. Step 4: Simplify right side
    103,337.21x = 9,488,469,842.59
  5. Step 5: Solve for x
    x = 9,488,469,842.59/103,337.21
  6. Step 6: Final answer
    x = 91,820.45

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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.