Home / 121,621.64-167,836.24-67,907.56

Finding the Fourth Proportional to 121,621.64, 167,836.24 and 67,907.56

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Solution

The fourth proportional to 121,621.64, 167,836.24 and 67,907.56 is: 93,711.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,621.64 : 167,836.24 = 67,907.56 : x
  2. Step 2: Convert to fraction form
    121,621.64/167,836.24 = 67,907.56/x
  3. Step 3: Cross multiply
    121,621.64x = 167,836.24 × 67,907.56
  4. Step 4: Simplify right side
    121,621.64x = 11,397,349,537.97
  5. Step 5: Solve for x
    x = 11,397,349,537.97/121,621.64
  6. Step 6: Final answer
    x = 93,711.53

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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.