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Finding the Fourth Proportional to 97,728.90, 146,374.65 and 84,606.90

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Solution

The fourth proportional to 97,728.90, 146,374.65 and 84,606.90 is: 126,721.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,728.90 : 146,374.65 = 84,606.90 : x
  2. Step 2: Convert to fraction form
    97,728.90/146,374.65 = 84,606.90/x
  3. Step 3: Cross multiply
    97,728.90x = 146,374.65 × 84,606.90
  4. Step 4: Simplify right side
    97,728.90x = 12,384,305,375.09
  5. Step 5: Solve for x
    x = 12,384,305,375.09/97,728.90
  6. Step 6: Final answer
    x = 126,721.01

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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.