Home / 100,420.23-138,583.98-60,125.97

Finding the Fourth Proportional to 100,420.23, 138,583.98 and 60,125.97

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Solution

The fourth proportional to 100,420.23, 138,583.98 and 60,125.97 is: 82,976.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,420.23 : 138,583.98 = 60,125.97 : x
  2. Step 2: Convert to fraction form
    100,420.23/138,583.98 = 60,125.97/x
  3. Step 3: Cross multiply
    100,420.23x = 138,583.98 × 60,125.97
  4. Step 4: Simplify right side
    100,420.23x = 8,332,496,223.96
  5. Step 5: Solve for x
    x = 8,332,496,223.96/100,420.23
  6. Step 6: Final answer
    x = 82,976.27

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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.