Home / 129,625.47-178,884.72-75,899.79

Finding the Fourth Proportional to 129,625.47, 178,884.72 and 75,899.79

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Solution

The fourth proportional to 129,625.47, 178,884.72 and 75,899.79 is: 104,742.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,625.47 : 178,884.72 = 75,899.79 : x
  2. Step 2: Convert to fraction form
    129,625.47/178,884.72 = 75,899.79/x
  3. Step 3: Cross multiply
    129,625.47x = 178,884.72 × 75,899.79
  4. Step 4: Simplify right side
    129,625.47x = 13,577,312,682.21
  5. Step 5: Solve for x
    x = 13,577,312,682.21/129,625.47
  6. Step 6: Final answer
    x = 104,742.63

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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.