Home / 129,628.48-178,781.52-108,851.80

Finding the Fourth Proportional to 129,628.48, 178,781.52 and 108,851.80

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Solution

The fourth proportional to 129,628.48, 178,781.52 and 108,851.80 is: 150,126.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.48 : 178,781.52 = 108,851.80 : x
  2. Step 2: Convert to fraction form
    129,628.48/178,781.52 = 108,851.80/x
  3. Step 3: Cross multiply
    129,628.48x = 178,781.52 × 108,851.80
  4. Step 4: Simplify right side
    129,628.48x = 19,460,690,258.74
  5. Step 5: Solve for x
    x = 19,460,690,258.74/129,628.48
  6. Step 6: Final answer
    x = 150,126.66

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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.