Home / 129,433.60-178,568.74-80,352.20

Finding the Fourth Proportional to 129,433.60, 178,568.74 and 80,352.20

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Solution

The fourth proportional to 129,433.60, 178,568.74 and 80,352.20 is: 110,855.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,433.60 : 178,568.74 = 80,352.20 : x
  2. Step 2: Convert to fraction form
    129,433.60/178,568.74 = 80,352.20/x
  3. Step 3: Cross multiply
    129,433.60x = 178,568.74 × 80,352.20
  4. Step 4: Simplify right side
    129,433.60x = 14,348,391,110.23
  5. Step 5: Solve for x
    x = 14,348,391,110.23/129,433.60
  6. Step 6: Final answer
    x = 110,855.23

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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.