Home / 129,899.41-179,259.48-72,539.73

Finding the Fourth Proportional to 129,899.41, 179,259.48 and 72,539.73

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Solution

The fourth proportional to 129,899.41, 179,259.48 and 72,539.73 is: 100,103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,899.41 : 179,259.48 = 72,539.73 : x
  2. Step 2: Convert to fraction form
    129,899.41/179,259.48 = 72,539.73/x
  3. Step 3: Cross multiply
    129,899.41x = 179,259.48 × 72,539.73
  4. Step 4: Simplify right side
    129,899.41x = 13,003,434,279.14
  5. Step 5: Solve for x
    x = 13,003,434,279.14/129,899.41
  6. Step 6: Final answer
    x = 100,103.88

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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.