Home / 100,716.48-151,674.28-87,725.70

Finding the Fourth Proportional to 100,716.48, 151,674.28 and 87,725.70

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Solution

The fourth proportional to 100,716.48, 151,674.28 and 87,725.70 is: 132,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,716.48 : 151,674.28 = 87,725.70 : x
  2. Step 2: Convert to fraction form
    100,716.48/151,674.28 = 87,725.70/x
  3. Step 3: Cross multiply
    100,716.48x = 151,674.28 × 87,725.70
  4. Step 4: Simplify right side
    100,716.48x = 13,305,732,165.68
  5. Step 5: Solve for x
    x = 13,305,732,165.68/100,716.48
  6. Step 6: Final answer
    x = 132,110.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.