Home / 129,176.26-178,268.52-72,587.50

Finding the Fourth Proportional to 129,176.26, 178,268.52 and 72,587.50

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Solution

The fourth proportional to 129,176.26, 178,268.52 and 72,587.50 is: 100,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,176.26 : 178,268.52 = 72,587.50 : x
  2. Step 2: Convert to fraction form
    129,176.26/178,268.52 = 72,587.50/x
  3. Step 3: Cross multiply
    129,176.26x = 178,268.52 × 72,587.50
  4. Step 4: Simplify right side
    129,176.26x = 12,940,066,195.50
  5. Step 5: Solve for x
    x = 12,940,066,195.50/129,176.26
  6. Step 6: Final answer
    x = 100,173.72

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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.