Home / 113,849.88-157,121.82-66,118.20

Finding the Fourth Proportional to 113,849.88, 157,121.82 and 66,118.20

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Solution

The fourth proportional to 113,849.88, 157,121.82 and 66,118.20 is: 91,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,849.88 : 157,121.82 = 66,118.20 : x
  2. Step 2: Convert to fraction form
    113,849.88/157,121.82 = 66,118.20/x
  3. Step 3: Cross multiply
    113,849.88x = 157,121.82 × 66,118.20
  4. Step 4: Simplify right side
    113,849.88x = 10,388,611,919.12
  5. Step 5: Solve for x
    x = 10,388,611,919.12/113,849.88
  6. Step 6: Final answer
    x = 91,248.33

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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.