Home / 205,712.03-284,057.81-129,358.90

Finding the Fourth Proportional to 205,712.03, 284,057.81 and 129,358.90

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Solution

The fourth proportional to 205,712.03, 284,057.81 and 129,358.90 is: 178,625.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,712.03 : 284,057.81 = 129,358.90 : x
  2. Step 2: Convert to fraction form
    205,712.03/284,057.81 = 129,358.90/x
  3. Step 3: Cross multiply
    205,712.03x = 284,057.81 × 129,358.90
  4. Step 4: Simplify right side
    205,712.03x = 36,745,405,838.01
  5. Step 5: Solve for x
    x = 36,745,405,838.01/205,712.03
  6. Step 6: Final answer
    x = 178,625.46

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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.