Home / 126,971.15-175,127.06-91,197.90

Finding the Fourth Proportional to 126,971.15, 175,127.06 and 91,197.90

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Solution

The fourth proportional to 126,971.15, 175,127.06 and 91,197.90 is: 125,786.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,971.15 : 175,127.06 = 91,197.90 : x
  2. Step 2: Convert to fraction form
    126,971.15/175,127.06 = 91,197.90/x
  3. Step 3: Cross multiply
    126,971.15x = 175,127.06 × 91,197.90
  4. Step 4: Simplify right side
    126,971.15x = 15,971,220,333.17
  5. Step 5: Solve for x
    x = 15,971,220,333.17/126,971.15
  6. Step 6: Final answer
    x = 125,786.22

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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.