Home / 126,122.70-173,868.42-99,218.45

Finding the Fourth Proportional to 126,122.70, 173,868.42 and 99,218.45

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Solution

The fourth proportional to 126,122.70, 173,868.42 and 99,218.45 is: 136,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,122.70 : 173,868.42 = 99,218.45 : x
  2. Step 2: Convert to fraction form
    126,122.70/173,868.42 = 99,218.45/x
  3. Step 3: Cross multiply
    126,122.70x = 173,868.42 × 99,218.45
  4. Step 4: Simplify right side
    126,122.70x = 17,250,955,943.09
  5. Step 5: Solve for x
    x = 17,250,955,943.09/126,122.70
  6. Step 6: Final answer
    x = 136,779.15

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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.