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Finding the Fourth Proportional to 147,041.20, 220,707.60 and 72,245.80

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Solution

The fourth proportional to 147,041.20, 220,707.60 and 72,245.80 is: 108,440.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,041.20 : 220,707.60 = 72,245.80 : x
  2. Step 2: Convert to fraction form
    147,041.20/220,707.60 = 72,245.80/x
  3. Step 3: Cross multiply
    147,041.20x = 220,707.60 × 72,245.80
  4. Step 4: Simplify right side
    147,041.20x = 15,945,197,128.08
  5. Step 5: Solve for x
    x = 15,945,197,128.08/147,041.20
  6. Step 6: Final answer
    x = 108,440.34

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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.