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Finding the Fourth Proportional to 103,500.90, 155,251.35 and 102,844.80

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Solution

The fourth proportional to 103,500.90, 155,251.35 and 102,844.80 is: 154,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,500.90 : 155,251.35 = 102,844.80 : x
  2. Step 2: Convert to fraction form
    103,500.90/155,251.35 = 102,844.80/x
  3. Step 3: Cross multiply
    103,500.90x = 155,251.35 × 102,844.80
  4. Step 4: Simplify right side
    103,500.90x = 15,966,794,040.48
  5. Step 5: Solve for x
    x = 15,966,794,040.48/103,500.90
  6. Step 6: Final answer
    x = 154,267.20

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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.