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Finding the Fourth Proportional to 147,261.40, 220,892.10 and 72,393.10

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Solution

The fourth proportional to 147,261.40, 220,892.10 and 72,393.10 is: 108,589.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,261.40 : 220,892.10 = 72,393.10 : x
  2. Step 2: Convert to fraction form
    147,261.40/220,892.10 = 72,393.10/x
  3. Step 3: Cross multiply
    147,261.40x = 220,892.10 × 72,393.10
  4. Step 4: Simplify right side
    147,261.40x = 15,991,063,884.51
  5. Step 5: Solve for x
    x = 15,991,063,884.51/147,261.40
  6. Step 6: Final answer
    x = 108,589.65

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Similar ratio
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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.