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Finding the Fourth Proportional to 103,876.17, 155,758.86 and 53,905.95

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Solution

The fourth proportional to 103,876.17, 155,758.86 and 53,905.95 is: 80,830.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,876.17 : 155,758.86 = 53,905.95 : x
  2. Step 2: Convert to fraction form
    103,876.17/155,758.86 = 53,905.95/x
  3. Step 3: Cross multiply
    103,876.17x = 155,758.86 × 53,905.95
  4. Step 4: Simplify right side
    103,876.17x = 8,396,329,319.22
  5. Step 5: Solve for x
    x = 8,396,329,319.22/103,876.17
  6. Step 6: Final answer
    x = 80,830.18

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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.