Home / 121,752.38-182,669.57-76,721.43

Finding the Fourth Proportional to 121,752.38, 182,669.57 and 76,721.43

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Solution

The fourth proportional to 121,752.38, 182,669.57 and 76,721.43 is: 115,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,752.38 : 182,669.57 = 76,721.43 : x
  2. Step 2: Convert to fraction form
    121,752.38/182,669.57 = 76,721.43/x
  3. Step 3: Cross multiply
    121,752.38x = 182,669.57 × 76,721.43
  4. Step 4: Simplify right side
    121,752.38x = 14,014,670,244.28
  5. Step 5: Solve for x
    x = 14,014,670,244.28/121,752.38
  6. Step 6: Final answer
    x = 115,107.98

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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.