Home / 142,999.32-197,336.44-79,335.75

Finding the Fourth Proportional to 142,999.32, 197,336.44 and 79,335.75

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Solution

The fourth proportional to 142,999.32, 197,336.44 and 79,335.75 is: 109,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,999.32 : 197,336.44 = 79,335.75 : x
  2. Step 2: Convert to fraction form
    142,999.32/197,336.44 = 79,335.75/x
  3. Step 3: Cross multiply
    142,999.32x = 197,336.44 × 79,335.75
  4. Step 4: Simplify right side
    142,999.32x = 15,655,834,073.05
  5. Step 5: Solve for x
    x = 15,655,834,073.05/142,999.32
  6. Step 6: Final answer
    x = 109,481.88

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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.