Home / 121,665.52-167,869.69-73,916.02

Finding the Fourth Proportional to 121,665.52, 167,869.69 and 73,916.02

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Solution

The fourth proportional to 121,665.52, 167,869.69 and 73,916.02 is: 101,986.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,665.52 : 167,869.69 = 73,916.02 : x
  2. Step 2: Convert to fraction form
    121,665.52/167,869.69 = 73,916.02/x
  3. Step 3: Cross multiply
    121,665.52x = 167,869.69 × 73,916.02
  4. Step 4: Simplify right side
    121,665.52x = 12,408,259,363.43
  5. Step 5: Solve for x
    x = 12,408,259,363.43/121,665.52
  6. Step 6: Final answer
    x = 101,986.65

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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.