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Finding the Fourth Proportional to 147,641.32, 203,742.18 and 80,573.80

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Solution

The fourth proportional to 147,641.32, 203,742.18 and 80,573.80 is: 111,190.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,641.32 : 203,742.18 = 80,573.80 : x
  2. Step 2: Convert to fraction form
    147,641.32/203,742.18 = 80,573.80/x
  3. Step 3: Cross multiply
    147,641.32x = 203,742.18 × 80,573.80
  4. Step 4: Simplify right side
    147,641.32x = 16,416,281,662.88
  5. Step 5: Solve for x
    x = 16,416,281,662.88/147,641.32
  6. Step 6: Final answer
    x = 111,190.29

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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.