Home / 126,821.82-175,009.80-72,377.01

Finding the Fourth Proportional to 126,821.82, 175,009.80 and 72,377.01

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Solution

The fourth proportional to 126,821.82, 175,009.80 and 72,377.01 is: 99,877.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,821.82 : 175,009.80 = 72,377.01 : x
  2. Step 2: Convert to fraction form
    126,821.82/175,009.80 = 72,377.01/x
  3. Step 3: Cross multiply
    126,821.82x = 175,009.80 × 72,377.01
  4. Step 4: Simplify right side
    126,821.82x = 12,666,686,044.70
  5. Step 5: Solve for x
    x = 12,666,686,044.70/126,821.82
  6. Step 6: Final answer
    x = 99,877.81

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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.