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Finding the Fourth Proportional to 134,665.70, 185,839.96 and 74,238.70

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Solution

The fourth proportional to 134,665.70, 185,839.96 and 74,238.70 is: 102,450.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,665.70 : 185,839.96 = 74,238.70 : x
  2. Step 2: Convert to fraction form
    134,665.70/185,839.96 = 74,238.70/x
  3. Step 3: Cross multiply
    134,665.70x = 185,839.96 × 74,238.70
  4. Step 4: Simplify right side
    134,665.70x = 13,796,517,038.45
  5. Step 5: Solve for x
    x = 13,796,517,038.45/134,665.70
  6. Step 6: Final answer
    x = 102,450.12

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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.