Home / 129,691.14-178,989.78-75,996.64

Finding the Fourth Proportional to 129,691.14, 178,989.78 and 75,996.64

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Solution

The fourth proportional to 129,691.14, 178,989.78 and 75,996.64 is: 104,884.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,691.14 : 178,989.78 = 75,996.64 : x
  2. Step 2: Convert to fraction form
    129,691.14/178,989.78 = 75,996.64/x
  3. Step 3: Cross multiply
    129,691.14x = 178,989.78 × 75,996.64
  4. Step 4: Simplify right side
    129,691.14x = 13,602,621,874.34
  5. Step 5: Solve for x
    x = 13,602,621,874.34/129,691.14
  6. Step 6: Final answer
    x = 104,884.74

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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.