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Finding the Fourth Proportional to 147,765.60, 203,915.04 and 80,697.60

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Solution

The fourth proportional to 147,765.60, 203,915.04 and 80,697.60 is: 111,361.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,765.60 : 203,915.04 = 80,697.60 : x
  2. Step 2: Convert to fraction form
    147,765.60/203,915.04 = 80,697.60/x
  3. Step 3: Cross multiply
    147,765.60x = 203,915.04 × 80,697.60
  4. Step 4: Simplify right side
    147,765.60x = 16,455,454,331.90
  5. Step 5: Solve for x
    x = 16,455,454,331.90/147,765.60
  6. Step 6: Final answer
    x = 111,361.88

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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.