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Finding the Fourth Proportional to 129,843.93, 179,187.65 and 81,447.92

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Solution

The fourth proportional to 129,843.93, 179,187.65 and 81,447.92 is: 112,400.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,843.93 : 179,187.65 = 81,447.92 : x
  2. Step 2: Convert to fraction form
    129,843.93/179,187.65 = 81,447.92/x
  3. Step 3: Cross multiply
    129,843.93x = 179,187.65 × 81,447.92
  4. Step 4: Simplify right side
    129,843.93x = 14,594,460,079.01
  5. Step 5: Solve for x
    x = 14,594,460,079.01/129,843.93
  6. Step 6: Final answer
    x = 112,400.02

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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.