Home / 121,787.62-168,055.38-68,071.41

Finding the Fourth Proportional to 121,787.62, 168,055.38 and 68,071.41

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Solution

The fourth proportional to 121,787.62, 168,055.38 and 68,071.41 is: 93,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,787.62 : 168,055.38 = 68,071.41 : x
  2. Step 2: Convert to fraction form
    121,787.62/168,055.38 = 68,071.41/x
  3. Step 3: Cross multiply
    121,787.62x = 168,055.38 × 68,071.41
  4. Step 4: Simplify right side
    121,787.62x = 11,439,766,674.69
  5. Step 5: Solve for x
    x = 11,439,766,674.69/121,787.62
  6. Step 6: Final answer
    x = 93,932.10

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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.