Home / 126,903.08-175,046.96-81,640

Finding the Fourth Proportional to 126,903.08, 175,046.96 and 81,640

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Solution

The fourth proportional to 126,903.08, 175,046.96 and 81,640 is: 112,612.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,903.08 : 175,046.96 = 81,640 : x
  2. Step 2: Convert to fraction form
    126,903.08/175,046.96 = 81,640/x
  3. Step 3: Cross multiply
    126,903.08x = 175,046.96 × 81,640
  4. Step 4: Simplify right side
    126,903.08x = 14,290,833,814.40
  5. Step 5: Solve for x
    x = 14,290,833,814.40/126,903.08
  6. Step 6: Final answer
    x = 112,612.19

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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.