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Finding the Fourth Proportional to 131,854.62, 181,914.62 and 74,485.56

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Solution

The fourth proportional to 131,854.62, 181,914.62 and 74,485.56 is: 102,764.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,854.62 : 181,914.62 = 74,485.56 : x
  2. Step 2: Convert to fraction form
    131,854.62/181,914.62 = 74,485.56/x
  3. Step 3: Cross multiply
    131,854.62x = 181,914.62 × 74,485.56
  4. Step 4: Simplify right side
    131,854.62x = 13,550,011,970.46
  5. Step 5: Solve for x
    x = 13,550,011,970.46/131,854.62
  6. Step 6: Final answer
    x = 102,764.79

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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.