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Finding the Fourth Proportional to 118,679, 163,795.34 and 67,691.84

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Solution

The fourth proportional to 118,679, 163,795.34 and 67,691.84 is: 93,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,679 : 163,795.34 = 67,691.84 : x
  2. Step 2: Convert to fraction form
    118,679/163,795.34 = 67,691.84/x
  3. Step 3: Cross multiply
    118,679x = 163,795.34 × 67,691.84
  4. Step 4: Simplify right side
    118,679x = 11,087,607,948.03
  5. Step 5: Solve for x
    x = 11,087,607,948.03/118,679
  6. Step 6: Final answer
    x = 93,425.19

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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.