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Finding the Fourth Proportional to 97,918.20, 146,877.30 and 85,087.80

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Solution

The fourth proportional to 97,918.20, 146,877.30 and 85,087.80 is: 127,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,918.20 : 146,877.30 = 85,087.80 : x
  2. Step 2: Convert to fraction form
    97,918.20/146,877.30 = 85,087.80/x
  3. Step 3: Cross multiply
    97,918.20x = 146,877.30 × 85,087.80
  4. Step 4: Simplify right side
    97,918.20x = 12,497,466,326.94
  5. Step 5: Solve for x
    x = 12,497,466,326.94/97,918.20
  6. Step 6: Final answer
    x = 127,631.70

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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.