Home / 129,066.69-178,176.83-80,695.52

Finding the Fourth Proportional to 129,066.69, 178,176.83 and 80,695.52

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Solution

The fourth proportional to 129,066.69, 178,176.83 and 80,695.52 is: 111,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,066.69 : 178,176.83 = 80,695.52 : x
  2. Step 2: Convert to fraction form
    129,066.69/178,176.83 = 80,695.52/x
  3. Step 3: Cross multiply
    129,066.69x = 178,176.83 × 80,695.52
  4. Step 4: Simplify right side
    129,066.69x = 14,378,070,654.44
  5. Step 5: Solve for x
    x = 14,378,070,654.44/129,066.69
  6. Step 6: Final answer
    x = 111,400.32

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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.