Home / 158,720.45-219,040.53-87,103.03

Finding the Fourth Proportional to 158,720.45, 219,040.53 and 87,103.03

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Solution

The fourth proportional to 158,720.45, 219,040.53 and 87,103.03 is: 120,205.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,720.45 : 219,040.53 = 87,103.03 : x
  2. Step 2: Convert to fraction form
    158,720.45/219,040.53 = 87,103.03/x
  3. Step 3: Cross multiply
    158,720.45x = 219,040.53 × 87,103.03
  4. Step 4: Simplify right side
    158,720.45x = 19,079,093,882.22
  5. Step 5: Solve for x
    x = 19,079,093,882.22/158,720.45
  6. Step 6: Final answer
    x = 120,205.65

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1.5x scale

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.