Home / 97,838.20-146,757.30-81,231.40

Finding the Fourth Proportional to 97,838.20, 146,757.30 and 81,231.40

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Solution

The fourth proportional to 97,838.20, 146,757.30 and 81,231.40 is: 121,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,838.20 : 146,757.30 = 81,231.40 : x
  2. Step 2: Convert to fraction form
    97,838.20/146,757.30 = 81,231.40/x
  3. Step 3: Cross multiply
    97,838.20x = 146,757.30 × 81,231.40
  4. Step 4: Simplify right side
    97,838.20x = 11,921,300,939.22
  5. Step 5: Solve for x
    x = 11,921,300,939.22/97,838.20
  6. Step 6: Final answer
    x = 121,847.10

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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.