Home / 129,241.57-178,341.60-74,784.33

Finding the Fourth Proportional to 129,241.57, 178,341.60 and 74,784.33

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Solution

The fourth proportional to 129,241.57, 178,341.60 and 74,784.33 is: 103,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,241.57 : 178,341.60 = 74,784.33 : x
  2. Step 2: Convert to fraction form
    129,241.57/178,341.60 = 74,784.33/x
  3. Step 3: Cross multiply
    129,241.57x = 178,341.60 × 74,784.33
  4. Step 4: Simplify right side
    129,241.57x = 13,337,156,175.42
  5. Step 5: Solve for x
    x = 13,337,156,175.42/129,241.57
  6. Step 6: Final answer
    x = 103,195.56

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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.