Home / 142,720.01-196,766.90-122,790.97

Finding the Fourth Proportional to 142,720.01, 196,766.90 and 122,790.97

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Solution

The fourth proportional to 142,720.01, 196,766.90 and 122,790.97 is: 169,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.01 : 196,766.90 = 122,790.97 : x
  2. Step 2: Convert to fraction form
    142,720.01/196,766.90 = 122,790.97/x
  3. Step 3: Cross multiply
    142,720.01x = 196,766.90 × 122,790.97
  4. Step 4: Simplify right side
    142,720.01x = 24,161,197,531.06
  5. Step 5: Solve for x
    x = 24,161,197,531.06/142,720.01
  6. Step 6: Final answer
    x = 169,290.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.