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Finding the Fourth Proportional to 118,511.22, 163,545.78 and 64,799.70

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Solution

The fourth proportional to 118,511.22, 163,545.78 and 64,799.70 is: 89,423.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,511.22 : 163,545.78 = 64,799.70 : x
  2. Step 2: Convert to fraction form
    118,511.22/163,545.78 = 64,799.70/x
  3. Step 3: Cross multiply
    118,511.22x = 163,545.78 × 64,799.70
  4. Step 4: Simplify right side
    118,511.22x = 10,597,717,480.27
  5. Step 5: Solve for x
    x = 10,597,717,480.27/118,511.22
  6. Step 6: Final answer
    x = 89,423.75

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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.