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Finding the Fourth Proportional to 103,805.60, 155,708.40 and 101,837.30

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Solution

The fourth proportional to 103,805.60, 155,708.40 and 101,837.30 is: 152,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,805.60 : 155,708.40 = 101,837.30 : x
  2. Step 2: Convert to fraction form
    103,805.60/155,708.40 = 101,837.30/x
  3. Step 3: Cross multiply
    103,805.60x = 155,708.40 × 101,837.30
  4. Step 4: Simplify right side
    103,805.60x = 15,856,923,043.32
  5. Step 5: Solve for x
    x = 15,856,923,043.32/103,805.60
  6. Step 6: Final answer
    x = 152,755.95

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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.