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Finding the Fourth Proportional to 98,734.40, 148,101.60 and 72,555.20

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Solution

The fourth proportional to 98,734.40, 148,101.60 and 72,555.20 is: 108,832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,734.40 : 148,101.60 = 72,555.20 : x
  2. Step 2: Convert to fraction form
    98,734.40/148,101.60 = 72,555.20/x
  3. Step 3: Cross multiply
    98,734.40x = 148,101.60 × 72,555.20
  4. Step 4: Simplify right side
    98,734.40x = 10,745,541,208.32
  5. Step 5: Solve for x
    x = 10,745,541,208.32/98,734.40
  6. Step 6: Final answer
    x = 108,832.80

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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.