Home / 142,085.03-196,063.38-78,418.73

Finding the Fourth Proportional to 142,085.03, 196,063.38 and 78,418.73

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Solution

The fourth proportional to 142,085.03, 196,063.38 and 78,418.73 is: 108,210.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,085.03 : 196,063.38 = 78,418.73 : x
  2. Step 2: Convert to fraction form
    142,085.03/196,063.38 = 78,418.73/x
  3. Step 3: Cross multiply
    142,085.03x = 196,063.38 × 78,418.73
  4. Step 4: Simplify right side
    142,085.03x = 15,375,040,278.79
  5. Step 5: Solve for x
    x = 15,375,040,278.79/142,085.03
  6. Step 6: Final answer
    x = 108,210.14

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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.