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Finding the Fourth Proportional to 118,191.78, 163,132.65 and 67,919.94

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Solution

The fourth proportional to 118,191.78, 163,132.65 and 67,919.94 is: 93,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,191.78 : 163,132.65 = 67,919.94 : x
  2. Step 2: Convert to fraction form
    118,191.78/163,132.65 = 67,919.94/x
  3. Step 3: Cross multiply
    118,191.78x = 163,132.65 × 67,919.94
  4. Step 4: Simplify right side
    118,191.78x = 11,079,959,800.04
  5. Step 5: Solve for x
    x = 11,079,959,800.04/118,191.78
  6. Step 6: Final answer
    x = 93,745.60

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1.5x scale

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.