Home / 155,679.38-214,824.78-87,674.61

Finding the Fourth Proportional to 155,679.38, 214,824.78 and 87,674.61

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Solution

The fourth proportional to 155,679.38, 214,824.78 and 87,674.61 is: 120,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,679.38 : 214,824.78 = 87,674.61 : x
  2. Step 2: Convert to fraction form
    155,679.38/214,824.78 = 87,674.61/x
  3. Step 3: Cross multiply
    155,679.38x = 214,824.78 × 87,674.61
  4. Step 4: Simplify right side
    155,679.38x = 18,834,678,804.84
  5. Step 5: Solve for x
    x = 18,834,678,804.84/155,679.38
  6. Step 6: Final answer
    x = 120,983.78

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1.5x scale

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.