Home / 142,540.85-196,693.01-85,168.75

Finding the Fourth Proportional to 142,540.85, 196,693.01 and 85,168.75

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Solution

The fourth proportional to 142,540.85, 196,693.01 and 85,168.75 is: 117,524.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,540.85 : 196,693.01 = 85,168.75 : x
  2. Step 2: Convert to fraction form
    142,540.85/196,693.01 = 85,168.75/x
  3. Step 3: Cross multiply
    142,540.85x = 196,693.01 × 85,168.75
  4. Step 4: Simplify right side
    142,540.85x = 16,752,097,795.44
  5. Step 5: Solve for x
    x = 16,752,097,795.44/142,540.85
  6. Step 6: Final answer
    x = 117,524.89

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1.5x scale

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.