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Finding the Fourth Proportional to 119,751.40, 179,627.10 and 72,512.20

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Solution

The fourth proportional to 119,751.40, 179,627.10 and 72,512.20 is: 108,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,751.40 : 179,627.10 = 72,512.20 : x
  2. Step 2: Convert to fraction form
    119,751.40/179,627.10 = 72,512.20/x
  3. Step 3: Cross multiply
    119,751.40x = 179,627.10 × 72,512.20
  4. Step 4: Simplify right side
    119,751.40x = 13,025,156,200.62
  5. Step 5: Solve for x
    x = 13,025,156,200.62/119,751.40
  6. Step 6: Final answer
    x = 108,768.30

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1.5x scale

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.