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Finding the Fourth Proportional to 158,851.66, 238,207.50 and 74,635.78

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Solution

The fourth proportional to 158,851.66, 238,207.50 and 74,635.78 is: 111,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,851.66 : 238,207.50 = 74,635.78 : x
  2. Step 2: Convert to fraction form
    158,851.66/238,207.50 = 74,635.78/x
  3. Step 3: Cross multiply
    158,851.66x = 238,207.50 × 74,635.78
  4. Step 4: Simplify right side
    158,851.66x = 17,778,802,564.35
  5. Step 5: Solve for x
    x = 17,778,802,564.35/158,851.66
  6. Step 6: Final answer
    x = 111,920.79

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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.