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Finding the Fourth Proportional to 134,138.50, 185,111.13 and 74,522.50

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Solution

The fourth proportional to 134,138.50, 185,111.13 and 74,522.50 is: 102,841.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,138.50 : 185,111.13 = 74,522.50 : x
  2. Step 2: Convert to fraction form
    134,138.50/185,111.13 = 74,522.50/x
  3. Step 3: Cross multiply
    134,138.50x = 185,111.13 × 74,522.50
  4. Step 4: Simplify right side
    134,138.50x = 13,794,944,185.43
  5. Step 5: Solve for x
    x = 13,794,944,185.43/134,138.50
  6. Step 6: Final answer
    x = 102,841.05

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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.