Home / 105,721.24-158,542.35-42,520.03

Finding the Fourth Proportional to 105,721.24, 158,542.35 and 42,520.03

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Solution

The fourth proportional to 105,721.24, 158,542.35 and 42,520.03 is: 63,764.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,721.24 : 158,542.35 = 42,520.03 : x
  2. Step 2: Convert to fraction form
    105,721.24/158,542.35 = 42,520.03/x
  3. Step 3: Cross multiply
    105,721.24x = 158,542.35 × 42,520.03
  4. Step 4: Simplify right side
    105,721.24x = 6,741,225,478.27
  5. Step 5: Solve for x
    x = 6,741,225,478.27/105,721.24
  6. Step 6: Final answer
    x = 63,764.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.