Home / 129,161.05-178,244.39-71,020.24

Finding the Fourth Proportional to 129,161.05, 178,244.39 and 71,020.24

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Solution

The fourth proportional to 129,161.05, 178,244.39 and 71,020.24 is: 98,009.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,161.05 : 178,244.39 = 71,020.24 : x
  2. Step 2: Convert to fraction form
    129,161.05/178,244.39 = 71,020.24/x
  3. Step 3: Cross multiply
    129,161.05x = 178,244.39 × 71,020.24
  4. Step 4: Simplify right side
    129,161.05x = 12,658,959,356.45
  5. Step 5: Solve for x
    x = 12,658,959,356.45/129,161.05
  6. Step 6: Final answer
    x = 98,009.11

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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.