Home / 128,787.04-193,179.54-40,040.38

Finding the Fourth Proportional to 128,787.04, 193,179.54 and 40,040.38

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Solution

The fourth proportional to 128,787.04, 193,179.54 and 40,040.38 is: 60,060.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,787.04 : 193,179.54 = 40,040.38 : x
  2. Step 2: Convert to fraction form
    128,787.04/193,179.54 = 40,040.38/x
  3. Step 3: Cross multiply
    128,787.04x = 193,179.54 × 40,040.38
  4. Step 4: Simplify right side
    128,787.04x = 7,734,982,189.83
  5. Step 5: Solve for x
    x = 7,734,982,189.83/128,787.04
  6. Step 6: Final answer
    x = 60,060.25

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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.