Home / 155,392.05-214,380.29-87,393.42

Finding the Fourth Proportional to 155,392.05, 214,380.29 and 87,393.42

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Solution

The fourth proportional to 155,392.05, 214,380.29 and 87,393.42 is: 120,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,392.05 : 214,380.29 = 87,393.42 : x
  2. Step 2: Convert to fraction form
    155,392.05/214,380.29 = 87,393.42/x
  3. Step 3: Cross multiply
    155,392.05x = 214,380.29 × 87,393.42
  4. Step 4: Simplify right side
    155,392.05x = 18,735,426,723.69
  5. Step 5: Solve for x
    x = 18,735,426,723.69/155,392.05
  6. Step 6: Final answer
    x = 120,568.76

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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.