Home / 97,720.30-146,143.05-81,973.90

Finding the Fourth Proportional to 97,720.30, 146,143.05 and 81,973.90

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Solution

The fourth proportional to 97,720.30, 146,143.05 and 81,973.90 is: 122,593.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,720.30 : 146,143.05 = 81,973.90 : x
  2. Step 2: Convert to fraction form
    97,720.30/146,143.05 = 81,973.90/x
  3. Step 3: Cross multiply
    97,720.30x = 146,143.05 × 81,973.90
  4. Step 4: Simplify right side
    97,720.30x = 11,979,915,766.40
  5. Step 5: Solve for x
    x = 11,979,915,766.40/97,720.30
  6. Step 6: Final answer
    x = 122,593.93

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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.