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Finding the Fourth Proportional to 136,712.87, 188,649.44 and 75,457.94

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Solution

The fourth proportional to 136,712.87, 188,649.44 and 75,457.94 is: 104,124.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,712.87 : 188,649.44 = 75,457.94 : x
  2. Step 2: Convert to fraction form
    136,712.87/188,649.44 = 75,457.94/x
  3. Step 3: Cross multiply
    136,712.87x = 188,649.44 × 75,457.94
  4. Step 4: Simplify right side
    136,712.87x = 14,235,096,804.02
  5. Step 5: Solve for x
    x = 14,235,096,804.02/136,712.87
  6. Step 6: Final answer
    x = 104,124.04

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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.