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Finding the Fourth Proportional to 147,888.32, 204,082.88 and 80,820.80

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Solution

The fourth proportional to 147,888.32, 204,082.88 and 80,820.80 is: 111,531.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,888.32 : 204,082.88 = 80,820.80 : x
  2. Step 2: Convert to fraction form
    147,888.32/204,082.88 = 80,820.80/x
  3. Step 3: Cross multiply
    147,888.32x = 204,082.88 × 80,820.80
  4. Step 4: Simplify right side
    147,888.32x = 16,494,141,627.90
  5. Step 5: Solve for x
    x = 16,494,141,627.90/147,888.32
  6. Step 6: Final answer
    x = 111,531.06

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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.