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Finding the Fourth Proportional to 131,422.95, 197,112.86 and 36,659.58

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Solution

The fourth proportional to 131,422.95, 197,112.86 and 36,659.58 is: 54,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,422.95 : 197,112.86 = 36,659.58 : x
  2. Step 2: Convert to fraction form
    131,422.95/197,112.86 = 36,659.58/x
  3. Step 3: Cross multiply
    131,422.95x = 197,112.86 × 36,659.58
  4. Step 4: Simplify right side
    131,422.95x = 7,226,074,476.90
  5. Step 5: Solve for x
    x = 7,226,074,476.90/131,422.95
  6. Step 6: Final answer
    x = 54,983.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.