Home / 129,869.40-179,219.84-71,726.24

Finding the Fourth Proportional to 129,869.40, 179,219.84 and 71,726.24

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Solution

The fourth proportional to 129,869.40, 179,219.84 and 71,726.24 is: 98,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,869.40 : 179,219.84 = 71,726.24 : x
  2. Step 2: Convert to fraction form
    129,869.40/179,219.84 = 71,726.24/x
  3. Step 3: Cross multiply
    129,869.40x = 179,219.84 × 71,726.24
  4. Step 4: Simplify right side
    129,869.40x = 12,854,765,256.60
  5. Step 5: Solve for x
    x = 12,854,765,256.60/129,869.40
  6. Step 6: Final answer
    x = 98,982.25

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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.