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Finding the Fourth Proportional to 97,734.40, 146,382.90 and 84,612.40

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Solution

The fourth proportional to 97,734.40, 146,382.90 and 84,612.40 is: 126,729.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,734.40 : 146,382.90 = 84,612.40 : x
  2. Step 2: Convert to fraction form
    97,734.40/146,382.90 = 84,612.40/x
  3. Step 3: Cross multiply
    97,734.40x = 146,382.90 × 84,612.40
  4. Step 4: Simplify right side
    97,734.40x = 12,385,808,487.96
  5. Step 5: Solve for x
    x = 12,385,808,487.96/97,734.40
  6. Step 6: Final answer
    x = 126,729.26

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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.