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Finding the Fourth Proportional to 131,773.95, 181,834.09 and 74,409.79

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Solution

The fourth proportional to 131,773.95, 181,834.09 and 74,409.79 is: 102,677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,773.95 : 181,834.09 = 74,409.79 : x
  2. Step 2: Convert to fraction form
    131,773.95/181,834.09 = 74,409.79/x
  3. Step 3: Cross multiply
    131,773.95x = 181,834.09 × 74,409.79
  4. Step 4: Simplify right side
    131,773.95x = 13,530,236,090.17
  5. Step 5: Solve for x
    x = 13,530,236,090.17/131,773.95
  6. Step 6: Final answer
    x = 102,677.62

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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.