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Finding the Fourth Proportional to 118,787.34, 163,881.42 and 73,450.80

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Solution

The fourth proportional to 118,787.34, 163,881.42 and 73,450.80 is: 101,334.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,787.34 : 163,881.42 = 73,450.80 : x
  2. Step 2: Convert to fraction form
    118,787.34/163,881.42 = 73,450.80/x
  3. Step 3: Cross multiply
    118,787.34x = 163,881.42 × 73,450.80
  4. Step 4: Simplify right side
    118,787.34x = 12,037,221,404.14
  5. Step 5: Solve for x
    x = 12,037,221,404.14/118,787.34
  6. Step 6: Final answer
    x = 101,334.21

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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.