Home / 142,118.30-196,126.82-80,861.11

Finding the Fourth Proportional to 142,118.30, 196,126.82 and 80,861.11

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Solution

The fourth proportional to 142,118.30, 196,126.82 and 80,861.11 is: 111,590.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,118.30 : 196,126.82 = 80,861.11 : x
  2. Step 2: Convert to fraction form
    142,118.30/196,126.82 = 80,861.11/x
  3. Step 3: Cross multiply
    142,118.30x = 196,126.82 × 80,861.11
  4. Step 4: Simplify right side
    142,118.30x = 15,859,032,326.18
  5. Step 5: Solve for x
    x = 15,859,032,326.18/142,118.30
  6. Step 6: Final answer
    x = 111,590.36

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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.