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Finding the Fourth Proportional to 122,952.78, 169,677.32 and 74,554.47

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Solution

The fourth proportional to 122,952.78, 169,677.32 and 74,554.47 is: 102,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,952.78 : 169,677.32 = 74,554.47 : x
  2. Step 2: Convert to fraction form
    122,952.78/169,677.32 = 74,554.47/x
  3. Step 3: Cross multiply
    122,952.78x = 169,677.32 × 74,554.47
  4. Step 4: Simplify right side
    122,952.78x = 12,650,202,290.85
  5. Step 5: Solve for x
    x = 12,650,202,290.85/122,952.78
  6. Step 6: Final answer
    x = 102,886.67

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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.