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Finding the Fourth Proportional to 98,010.80, 146,843.40 and 80,385.20

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Solution

The fourth proportional to 98,010.80, 146,843.40 and 80,385.20 is: 120,436.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,010.80 : 146,843.40 = 80,385.20 : x
  2. Step 2: Convert to fraction form
    98,010.80/146,843.40 = 80,385.20/x
  3. Step 3: Cross multiply
    98,010.80x = 146,843.40 × 80,385.20
  4. Step 4: Simplify right side
    98,010.80x = 11,804,036,077.68
  5. Step 5: Solve for x
    x = 11,804,036,077.68/98,010.80
  6. Step 6: Final answer
    x = 120,436.08

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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.