Home / 225,781.29-311,587.74-129,001.07

Finding the Fourth Proportional to 225,781.29, 311,587.74 and 129,001.07

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Solution

The fourth proportional to 225,781.29, 311,587.74 and 129,001.07 is: 178,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,781.29 : 311,587.74 = 129,001.07 : x
  2. Step 2: Convert to fraction form
    225,781.29/311,587.74 = 129,001.07/x
  3. Step 3: Cross multiply
    225,781.29x = 311,587.74 × 129,001.07
  4. Step 4: Simplify right side
    225,781.29x = 40,195,152,637.85
  5. Step 5: Solve for x
    x = 40,195,152,637.85/225,781.29
  6. Step 6: Final answer
    x = 178,026.94

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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.