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Finding the Fourth Proportional to 97,761.20, 146,296.20 and 66,657.20

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Solution

The fourth proportional to 97,761.20, 146,296.20 and 66,657.20 is: 99,750.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,761.20 : 146,296.20 = 66,657.20 : x
  2. Step 2: Convert to fraction form
    97,761.20/146,296.20 = 66,657.20/x
  3. Step 3: Cross multiply
    97,761.20x = 146,296.20 × 66,657.20
  4. Step 4: Simplify right side
    97,761.20x = 9,751,695,062.64
  5. Step 5: Solve for x
    x = 9,751,695,062.64/97,761.20
  6. Step 6: Final answer
    x = 99,750.16

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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.