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Finding the Fourth Proportional to 163,778.12, 245,583.57 and 74,955.47

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Solution

The fourth proportional to 163,778.12, 245,583.57 and 74,955.47 is: 112,394.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,778.12 : 245,583.57 = 74,955.47 : x
  2. Step 2: Convert to fraction form
    163,778.12/245,583.57 = 74,955.47/x
  3. Step 3: Cross multiply
    163,778.12x = 245,583.57 × 74,955.47
  4. Step 4: Simplify right side
    163,778.12x = 18,407,832,201.88
  5. Step 5: Solve for x
    x = 18,407,832,201.88/163,778.12
  6. Step 6: Final answer
    x = 112,394.94

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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.