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Finding the Fourth Proportional to 123,334.78, 170,202.03 and 66,746.20

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Solution

The fourth proportional to 123,334.78, 170,202.03 and 66,746.20 is: 92,109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,334.78 : 170,202.03 = 66,746.20 : x
  2. Step 2: Convert to fraction form
    123,334.78/170,202.03 = 66,746.20/x
  3. Step 3: Cross multiply
    123,334.78x = 170,202.03 × 66,746.20
  4. Step 4: Simplify right side
    123,334.78x = 11,360,338,734.79
  5. Step 5: Solve for x
    x = 11,360,338,734.79/123,334.78
  6. Step 6: Final answer
    x = 92,109.77

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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.