Home / 124,905.89-172,363.79-77,163.41

Finding the Fourth Proportional to 124,905.89, 172,363.79 and 77,163.41

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Solution

The fourth proportional to 124,905.89, 172,363.79 and 77,163.41 is: 106,481.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,905.89 : 172,363.79 = 77,163.41 : x
  2. Step 2: Convert to fraction form
    124,905.89/172,363.79 = 77,163.41/x
  3. Step 3: Cross multiply
    124,905.89x = 172,363.79 × 77,163.41
  4. Step 4: Simplify right side
    124,905.89x = 13,300,176,549.29
  5. Step 5: Solve for x
    x = 13,300,176,549.29/124,905.89
  6. Step 6: Final answer
    x = 106,481.58

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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.