Home / 158,839.11-219,196.35-87,218.46

Finding the Fourth Proportional to 158,839.11, 219,196.35 and 87,218.46

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Solution

The fourth proportional to 158,839.11, 219,196.35 and 87,218.46 is: 120,360.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,839.11 : 219,196.35 = 87,218.46 : x
  2. Step 2: Convert to fraction form
    158,839.11/219,196.35 = 87,218.46/x
  3. Step 3: Cross multiply
    158,839.11x = 219,196.35 × 87,218.46
  4. Step 4: Simplify right side
    158,839.11x = 19,117,968,084.62
  5. Step 5: Solve for x
    x = 19,117,968,084.62/158,839.11
  6. Step 6: Final answer
    x = 120,360.58

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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.