Home / 129,943.57-179,272.72-81,524.98

Finding the Fourth Proportional to 129,943.57, 179,272.72 and 81,524.98

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Solution

The fourth proportional to 129,943.57, 179,272.72 and 81,524.98 is: 112,473.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,943.57 : 179,272.72 = 81,524.98 : x
  2. Step 2: Convert to fraction form
    129,943.57/179,272.72 = 81,524.98/x
  3. Step 3: Cross multiply
    129,943.57x = 179,272.72 × 81,524.98
  4. Step 4: Simplify right side
    129,943.57x = 14,615,205,009.25
  5. Step 5: Solve for x
    x = 14,615,205,009.25/129,943.57
  6. Step 6: Final answer
    x = 112,473.48

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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.