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Finding the Fourth Proportional to 147,819.12, 203,990.04 and 80,751.60

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Solution

The fourth proportional to 147,819.12, 203,990.04 and 80,751.60 is: 111,437.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,819.12 : 203,990.04 = 80,751.60 : x
  2. Step 2: Convert to fraction form
    147,819.12/203,990.04 = 80,751.60/x
  3. Step 3: Cross multiply
    147,819.12x = 203,990.04 × 80,751.60
  4. Step 4: Simplify right side
    147,819.12x = 16,472,522,114.06
  5. Step 5: Solve for x
    x = 16,472,522,114.06/147,819.12
  6. Step 6: Final answer
    x = 111,437.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.