Home / 126,999.72-175,203.12-81,669.36

Finding the Fourth Proportional to 126,999.72, 175,203.12 and 81,669.36

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Solution

The fourth proportional to 126,999.72, 175,203.12 and 81,669.36 is: 112,667.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,999.72 : 175,203.12 = 81,669.36 : x
  2. Step 2: Convert to fraction form
    126,999.72/175,203.12 = 81,669.36/x
  3. Step 3: Cross multiply
    126,999.72x = 175,203.12 × 81,669.36
  4. Step 4: Simplify right side
    126,999.72x = 14,308,726,680.40
  5. Step 5: Solve for x
    x = 14,308,726,680.40/126,999.72
  6. Step 6: Final answer
    x = 112,667.39

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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.