Home / 121,787.13-168,074.10-68,074.41

Finding the Fourth Proportional to 121,787.13, 168,074.10 and 68,074.41

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Solution

The fourth proportional to 121,787.13, 168,074.10 and 68,074.41 is: 93,947.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,787.13 : 168,074.10 = 68,074.41 : x
  2. Step 2: Convert to fraction form
    121,787.13/168,074.10 = 68,074.41/x
  3. Step 3: Cross multiply
    121,787.13x = 168,074.10 × 68,074.41
  4. Step 4: Simplify right side
    121,787.13x = 11,441,545,193.78
  5. Step 5: Solve for x
    x = 11,441,545,193.78/121,787.13
  6. Step 6: Final answer
    x = 93,947.08

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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.