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Finding the Fourth Proportional to 133,220.54, 199,862.14 and 39,728.18

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Solution

The fourth proportional to 133,220.54, 199,862.14 and 39,728.18 is: 59,601.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,220.54 : 199,862.14 = 39,728.18 : x
  2. Step 2: Convert to fraction form
    133,220.54/199,862.14 = 39,728.18/x
  3. Step 3: Cross multiply
    133,220.54x = 199,862.14 × 39,728.18
  4. Step 4: Simplify right side
    133,220.54x = 7,940,159,073.11
  5. Step 5: Solve for x
    x = 7,940,159,073.11/133,220.54
  6. Step 6: Final answer
    x = 59,601.61

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1.5x scale

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.