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Finding the Fourth Proportional to 103,819.60, 155,729.40 and 101,851.30

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Solution

The fourth proportional to 103,819.60, 155,729.40 and 101,851.30 is: 152,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,819.60 : 155,729.40 = 101,851.30 : x
  2. Step 2: Convert to fraction form
    103,819.60/155,729.40 = 101,851.30/x
  3. Step 3: Cross multiply
    103,819.60x = 155,729.40 × 101,851.30
  4. Step 4: Simplify right side
    103,819.60x = 15,861,241,838.22
  5. Step 5: Solve for x
    x = 15,861,241,838.22/103,819.60
  6. Step 6: Final answer
    x = 152,776.95

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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.