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Finding the Fourth Proportional to 128,060.89, 192,119.88 and 39,323.36

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Solution

The fourth proportional to 128,060.89, 192,119.88 and 39,323.36 is: 58,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,060.89 : 192,119.88 = 39,323.36 : x
  2. Step 2: Convert to fraction form
    128,060.89/192,119.88 = 39,323.36/x
  3. Step 3: Cross multiply
    128,060.89x = 192,119.88 × 39,323.36
  4. Step 4: Simplify right side
    128,060.89x = 7,554,799,204.40
  5. Step 5: Solve for x
    x = 7,554,799,204.40/128,060.89
  6. Step 6: Final answer
    x = 58,993.81

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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.