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Finding the Fourth Proportional to 131,774.95, 181,835.47 and 74,410.79

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Solution

The fourth proportional to 131,774.95, 181,835.47 and 74,410.79 is: 102,679.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,774.95 : 181,835.47 = 74,410.79 : x
  2. Step 2: Convert to fraction form
    131,774.95/181,835.47 = 74,410.79/x
  3. Step 3: Cross multiply
    131,774.95x = 181,835.47 × 74,410.79
  4. Step 4: Simplify right side
    131,774.95x = 13,530,520,972.72
  5. Step 5: Solve for x
    x = 13,530,520,972.72/131,774.95
  6. Step 6: Final answer
    x = 102,679.01

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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.