Home / 126,141.78-174,079.17-77,091.35

Finding the Fourth Proportional to 126,141.78, 174,079.17 and 77,091.35

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Solution

The fourth proportional to 126,141.78, 174,079.17 and 77,091.35 is: 106,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,141.78 : 174,079.17 = 77,091.35 : x
  2. Step 2: Convert to fraction form
    126,141.78/174,079.17 = 77,091.35/x
  3. Step 3: Cross multiply
    126,141.78x = 174,079.17 × 77,091.35
  4. Step 4: Simplify right side
    126,141.78x = 13,419,997,715.49
  5. Step 5: Solve for x
    x = 13,419,997,715.49/126,141.78
  6. Step 6: Final answer
    x = 106,388.20

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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.