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Finding the Fourth Proportional to 136,649.66, 205,014.18 and 56,672.96

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Solution

The fourth proportional to 136,649.66, 205,014.18 and 56,672.96 is: 85,025.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,649.66 : 205,014.18 = 56,672.96 : x
  2. Step 2: Convert to fraction form
    136,649.66/205,014.18 = 56,672.96/x
  3. Step 3: Cross multiply
    136,649.66x = 205,014.18 × 56,672.96
  4. Step 4: Simplify right side
    136,649.66x = 11,618,760,422.57
  5. Step 5: Solve for x
    x = 11,618,760,422.57/136,649.66
  6. Step 6: Final answer
    x = 85,025.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.