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Finding the Fourth Proportional to 147,316.80, 220,829.40 and 72,375.60

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Solution

The fourth proportional to 147,316.80, 220,829.40 and 72,375.60 is: 108,491.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,316.80 : 220,829.40 = 72,375.60 : x
  2. Step 2: Convert to fraction form
    147,316.80/220,829.40 = 72,375.60/x
  3. Step 3: Cross multiply
    147,316.80x = 220,829.40 × 72,375.60
  4. Step 4: Simplify right side
    147,316.80x = 15,982,660,322.64
  5. Step 5: Solve for x
    x = 15,982,660,322.64/147,316.80
  6. Step 6: Final answer
    x = 108,491.77

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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.