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Finding the Fourth Proportional to 128,154.33, 192,051.02 and 60,614.31

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Solution

The fourth proportional to 128,154.33, 192,051.02 and 60,614.31 is: 90,836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,154.33 : 192,051.02 = 60,614.31 : x
  2. Step 2: Convert to fraction form
    128,154.33/192,051.02 = 60,614.31/x
  3. Step 3: Cross multiply
    128,154.33x = 192,051.02 × 60,614.31
  4. Step 4: Simplify right side
    128,154.33x = 11,641,039,759.02
  5. Step 5: Solve for x
    x = 11,641,039,759.02/128,154.33
  6. Step 6: Final answer
    x = 90,836.10

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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.