Home / 79,660.98-120,023.28-72,071.16

Finding the Fourth Proportional to 79,660.98, 120,023.28 and 72,071.16

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Solution

The fourth proportional to 79,660.98, 120,023.28 and 72,071.16 is: 108,587.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.98 : 120,023.28 = 72,071.16 : x
  2. Step 2: Convert to fraction form
    79,660.98/120,023.28 = 72,071.16/x
  3. Step 3: Cross multiply
    79,660.98x = 120,023.28 × 72,071.16
  4. Step 4: Simplify right side
    79,660.98x = 8,650,217,016.60
  5. Step 5: Solve for x
    x = 8,650,217,016.60/79,660.98
  6. Step 6: Final answer
    x = 108,587.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.