Home / 99,728.33-137,638.44-63,433.31

Finding the Fourth Proportional to 99,728.33, 137,638.44 and 63,433.31

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Solution

The fourth proportional to 99,728.33, 137,638.44 and 63,433.31 is: 87,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,728.33 : 137,638.44 = 63,433.31 : x
  2. Step 2: Convert to fraction form
    99,728.33/137,638.44 = 63,433.31/x
  3. Step 3: Cross multiply
    99,728.33x = 137,638.44 × 63,433.31
  4. Step 4: Simplify right side
    99,728.33x = 8,730,861,144.24
  5. Step 5: Solve for x
    x = 8,730,861,144.24/99,728.33
  6. Step 6: Final answer
    x = 87,546.45

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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.