Home / 155,412.94-214,467.81-87,429.70

Finding the Fourth Proportional to 155,412.94, 214,467.81 and 87,429.70

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Solution

The fourth proportional to 155,412.94, 214,467.81 and 87,429.70 is: 120,651.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,412.94 : 214,467.81 = 87,429.70 : x
  2. Step 2: Convert to fraction form
    155,412.94/214,467.81 = 87,429.70/x
  3. Step 3: Cross multiply
    155,412.94x = 214,467.81 × 87,429.70
  4. Step 4: Simplify right side
    155,412.94x = 18,750,856,287.96
  5. Step 5: Solve for x
    x = 18,750,856,287.96/155,412.94
  6. Step 6: Final answer
    x = 120,651.83

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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.