Home / 99,456.12-149,190.66-40,290.48

Finding the Fourth Proportional to 99,456.12, 149,190.66 and 40,290.48

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Solution

The fourth proportional to 99,456.12, 149,190.66 and 40,290.48 is: 60,438.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,456.12 : 149,190.66 = 40,290.48 : x
  2. Step 2: Convert to fraction form
    99,456.12/149,190.66 = 40,290.48/x
  3. Step 3: Cross multiply
    99,456.12x = 149,190.66 × 40,290.48
  4. Step 4: Simplify right side
    99,456.12x = 6,010,963,302.92
  5. Step 5: Solve for x
    x = 6,010,963,302.92/99,456.12
  6. Step 6: Final answer
    x = 60,438.35

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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.