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Finding the Fourth Proportional to 98,800.80, 147,769.20 and 88,346.40

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Solution

The fourth proportional to 98,800.80, 147,769.20 and 88,346.40 is: 132,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,800.80 : 147,769.20 = 88,346.40 : x
  2. Step 2: Convert to fraction form
    98,800.80/147,769.20 = 88,346.40/x
  3. Step 3: Cross multiply
    98,800.80x = 147,769.20 × 88,346.40
  4. Step 4: Simplify right side
    98,800.80x = 13,054,876,850.88
  5. Step 5: Solve for x
    x = 13,054,876,850.88/98,800.80
  6. Step 6: Final answer
    x = 132,133.31

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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.