Home / 155,370.62-214,409.33-87,387.56

Finding the Fourth Proportional to 155,370.62, 214,409.33 and 87,387.56

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Solution

The fourth proportional to 155,370.62, 214,409.33 and 87,387.56 is: 120,593.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,370.62 : 214,409.33 = 87,387.56 : x
  2. Step 2: Convert to fraction form
    155,370.62/214,409.33 = 87,387.56/x
  3. Step 3: Cross multiply
    155,370.62x = 214,409.33 × 87,387.56
  4. Step 4: Simplify right side
    155,370.62x = 18,736,709,510.30
  5. Step 5: Solve for x
    x = 18,736,709,510.30/155,370.62
  6. Step 6: Final answer
    x = 120,593.64

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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.