Home / 123,821.18-170,881.40-69,377.72

Finding the Fourth Proportional to 123,821.18, 170,881.40 and 69,377.72

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Solution

The fourth proportional to 123,821.18, 170,881.40 and 69,377.72 is: 95,745.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,821.18 : 170,881.40 = 69,377.72 : x
  2. Step 2: Convert to fraction form
    123,821.18/170,881.40 = 69,377.72/x
  3. Step 3: Cross multiply
    123,821.18x = 170,881.40 × 69,377.72
  4. Step 4: Simplify right side
    123,821.18x = 11,855,360,851.20
  5. Step 5: Solve for x
    x = 11,855,360,851.20/123,821.18
  6. Step 6: Final answer
    x = 95,745.82

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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.