Home / 126,887.85-175,007.21-81,570.51

Finding the Fourth Proportional to 126,887.85, 175,007.21 and 81,570.51

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Solution

The fourth proportional to 126,887.85, 175,007.21 and 81,570.51 is: 112,504.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,887.85 : 175,007.21 = 81,570.51 : x
  2. Step 2: Convert to fraction form
    126,887.85/175,007.21 = 81,570.51/x
  3. Step 3: Cross multiply
    126,887.85x = 175,007.21 × 81,570.51
  4. Step 4: Simplify right side
    126,887.85x = 14,275,426,965.52
  5. Step 5: Solve for x
    x = 14,275,426,965.52/126,887.85
  6. Step 6: Final answer
    x = 112,504.29

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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.