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Finding the Fourth Proportional to 147,287.68, 203,259.20 and 80,220.80

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Solution

The fourth proportional to 147,287.68, 203,259.20 and 80,220.80 is: 110,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,287.68 : 203,259.20 = 80,220.80 : x
  2. Step 2: Convert to fraction form
    147,287.68/203,259.20 = 80,220.80/x
  3. Step 3: Cross multiply
    147,287.68x = 203,259.20 × 80,220.80
  4. Step 4: Simplify right side
    147,287.68x = 16,305,615,631.36
  5. Step 5: Solve for x
    x = 16,305,615,631.36/147,287.68
  6. Step 6: Final answer
    x = 110,705.90

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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.