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Finding the Fourth Proportional to 118,281.78, 163,232.54 and 67,301.91

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Solution

The fourth proportional to 118,281.78, 163,232.54 and 67,301.91 is: 92,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,281.78 : 163,232.54 = 67,301.91 : x
  2. Step 2: Convert to fraction form
    118,281.78/163,232.54 = 67,301.91/x
  3. Step 3: Cross multiply
    118,281.78x = 163,232.54 × 67,301.91
  4. Step 4: Simplify right side
    118,281.78x = 10,985,861,379.64
  5. Step 5: Solve for x
    x = 10,985,861,379.64/118,281.78
  6. Step 6: Final answer
    x = 92,878.73

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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.