Home / 129,194.57-178,248.43-75,440.81

Finding the Fourth Proportional to 129,194.57, 178,248.43 and 75,440.81

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Solution

The fourth proportional to 129,194.57, 178,248.43 and 75,440.81 is: 104,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,194.57 : 178,248.43 = 75,440.81 : x
  2. Step 2: Convert to fraction form
    129,194.57/178,248.43 = 75,440.81/x
  3. Step 3: Cross multiply
    129,194.57x = 178,248.43 × 75,440.81
  4. Step 4: Simplify right side
    129,194.57x = 13,447,204,671.98
  5. Step 5: Solve for x
    x = 13,447,204,671.98/129,194.57
  6. Step 6: Final answer
    x = 104,084.91

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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.