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Finding the Fourth Proportional to 108,488.92, 149,682.32 and 70,187.80

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Solution

The fourth proportional to 108,488.92, 149,682.32 and 70,187.80 is: 96,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,488.92 : 149,682.32 = 70,187.80 : x
  2. Step 2: Convert to fraction form
    108,488.92/149,682.32 = 70,187.80/x
  3. Step 3: Cross multiply
    108,488.92x = 149,682.32 × 70,187.80
  4. Step 4: Simplify right side
    108,488.92x = 10,505,872,540.96
  5. Step 5: Solve for x
    x = 10,505,872,540.96/108,488.92
  6. Step 6: Final answer
    x = 96,838.21

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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.