Home / 142,086.03-196,064.76-78,419.73

Finding the Fourth Proportional to 142,086.03, 196,064.76 and 78,419.73

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Solution

The fourth proportional to 142,086.03, 196,064.76 and 78,419.73 is: 108,211.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,086.03 : 196,064.76 = 78,419.73 : x
  2. Step 2: Convert to fraction form
    142,086.03/196,064.76 = 78,419.73/x
  3. Step 3: Cross multiply
    142,086.03x = 196,064.76 × 78,419.73
  4. Step 4: Simplify right side
    142,086.03x = 15,375,345,541.71
  5. Step 5: Solve for x
    x = 15,375,345,541.71/142,086.03
  6. Step 6: Final answer
    x = 108,211.52

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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.