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Finding the Fourth Proportional to 118,280.71, 163,221.69 and 67,288.65

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Solution

The fourth proportional to 118,280.71, 163,221.69 and 67,288.65 is: 92,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,280.71 : 163,221.69 = 67,288.65 : x
  2. Step 2: Convert to fraction form
    118,280.71/163,221.69 = 67,288.65/x
  3. Step 3: Cross multiply
    118,280.71x = 163,221.69 × 67,288.65
  4. Step 4: Simplify right side
    118,280.71x = 10,982,967,170.82
  5. Step 5: Solve for x
    x = 10,982,967,170.82/118,280.71
  6. Step 6: Final answer
    x = 92,855.10

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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.