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Finding the Fourth Proportional to 118,840.70, 164,001.44 and 65,124.56

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Solution

The fourth proportional to 118,840.70, 164,001.44 and 65,124.56 is: 89,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,840.70 : 164,001.44 = 65,124.56 : x
  2. Step 2: Convert to fraction form
    118,840.70/164,001.44 = 65,124.56/x
  3. Step 3: Cross multiply
    118,840.70x = 164,001.44 × 65,124.56
  4. Step 4: Simplify right side
    118,840.70x = 10,680,520,473.74
  5. Step 5: Solve for x
    x = 10,680,520,473.74/118,840.70
  6. Step 6: Final answer
    x = 89,872.59

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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.