Home / 142,538.85-196,690.25-85,166.75

Finding the Fourth Proportional to 142,538.85, 196,690.25 and 85,166.75

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Solution

The fourth proportional to 142,538.85, 196,690.25 and 85,166.75 is: 117,522.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,538.85 : 196,690.25 = 85,166.75 : x
  2. Step 2: Convert to fraction form
    142,538.85/196,690.25 = 85,166.75/x
  3. Step 3: Cross multiply
    142,538.85x = 196,690.25 × 85,166.75
  4. Step 4: Simplify right side
    142,538.85x = 16,751,468,365.74
  5. Step 5: Solve for x
    x = 16,751,468,365.74/142,538.85
  6. Step 6: Final answer
    x = 117,522.12

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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.