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Finding the Fourth Proportional to 118,691.91, 163,794.56 and 64,976.91

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Solution

The fourth proportional to 118,691.91, 163,794.56 and 64,976.91 is: 89,667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,691.91 : 163,794.56 = 64,976.91 : x
  2. Step 2: Convert to fraction form
    118,691.91/163,794.56 = 64,976.91/x
  3. Step 3: Cross multiply
    118,691.91x = 163,794.56 × 64,976.91
  4. Step 4: Simplify right side
    118,691.91x = 10,642,864,058.73
  5. Step 5: Solve for x
    x = 10,642,864,058.73/118,691.91
  6. Step 6: Final answer
    x = 89,667.98

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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.