Home / 100,335.37-138,463.92-57,320.55

Finding the Fourth Proportional to 100,335.37, 138,463.92 and 57,320.55

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Solution

The fourth proportional to 100,335.37, 138,463.92 and 57,320.55 is: 79,102.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,335.37 : 138,463.92 = 57,320.55 : x
  2. Step 2: Convert to fraction form
    100,335.37/138,463.92 = 57,320.55/x
  3. Step 3: Cross multiply
    100,335.37x = 138,463.92 × 57,320.55
  4. Step 4: Simplify right side
    100,335.37x = 7,936,828,049.56
  5. Step 5: Solve for x
    x = 7,936,828,049.56/100,335.37
  6. Step 6: Final answer
    x = 79,102.99

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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.