Home / 129,176.01-178,292.88-81,494.55

Finding the Fourth Proportional to 129,176.01, 178,292.88 and 81,494.55

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Solution

The fourth proportional to 129,176.01, 178,292.88 and 81,494.55 is: 112,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,176.01 : 178,292.88 = 81,494.55 : x
  2. Step 2: Convert to fraction form
    129,176.01/178,292.88 = 81,494.55/x
  3. Step 3: Cross multiply
    129,176.01x = 178,292.88 × 81,494.55
  4. Step 4: Simplify right side
    129,176.01x = 14,529,898,023.80
  5. Step 5: Solve for x
    x = 14,529,898,023.80/129,176.01
  6. Step 6: Final answer
    x = 112,481.40

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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.