Home / 142,151.44-196,170.24-78,494.08

Finding the Fourth Proportional to 142,151.44, 196,170.24 and 78,494.08

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Solution

The fourth proportional to 142,151.44, 196,170.24 and 78,494.08 is: 108,322.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,151.44 : 196,170.24 = 78,494.08 : x
  2. Step 2: Convert to fraction form
    142,151.44/196,170.24 = 78,494.08/x
  3. Step 3: Cross multiply
    142,151.44x = 196,170.24 × 78,494.08
  4. Step 4: Simplify right side
    142,151.44x = 15,398,202,512.18
  5. Step 5: Solve for x
    x = 15,398,202,512.18/142,151.44
  6. Step 6: Final answer
    x = 108,322.52

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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.