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Finding the Fourth Proportional to 149,099.91, 205,742.51 and 88,658.88

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Solution

The fourth proportional to 149,099.91, 205,742.51 and 88,658.88 is: 122,340.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,099.91 : 205,742.51 = 88,658.88 : x
  2. Step 2: Convert to fraction form
    149,099.91/205,742.51 = 88,658.88/x
  3. Step 3: Cross multiply
    149,099.91x = 205,742.51 × 88,658.88
  4. Step 4: Simplify right side
    149,099.91x = 18,240,899,476.28
  5. Step 5: Solve for x
    x = 18,240,899,476.28/149,099.91
  6. Step 6: Final answer
    x = 122,340.11

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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.