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Finding the Fourth Proportional to 108,706.92, 149,952 and 68,356.80

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Solution

The fourth proportional to 108,706.92, 149,952 and 68,356.80 is: 94,292.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,706.92 : 149,952 = 68,356.80 : x
  2. Step 2: Convert to fraction form
    108,706.92/149,952 = 68,356.80/x
  3. Step 3: Cross multiply
    108,706.92x = 149,952 × 68,356.80
  4. Step 4: Simplify right side
    108,706.92x = 10,250,238,873.60
  5. Step 5: Solve for x
    x = 10,250,238,873.60/108,706.92
  6. Step 6: Final answer
    x = 94,292.42

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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.