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Finding the Fourth Proportional to 118,906.81, 164,085.12 and 67,909.45

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Solution

The fourth proportional to 118,906.81, 164,085.12 and 67,909.45 is: 93,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,906.81 : 164,085.12 = 67,909.45 : x
  2. Step 2: Convert to fraction form
    118,906.81/164,085.12 = 67,909.45/x
  3. Step 3: Cross multiply
    118,906.81x = 164,085.12 × 67,909.45
  4. Step 4: Simplify right side
    118,906.81x = 11,142,930,252.38
  5. Step 5: Solve for x
    x = 11,142,930,252.38/118,906.81
  6. Step 6: Final answer
    x = 93,711.46

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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.