Home / 155,278.58-214,279.47-87,298.43

Finding the Fourth Proportional to 155,278.58, 214,279.47 and 87,298.43

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Solution

The fourth proportional to 155,278.58, 214,279.47 and 87,298.43 is: 120,469.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,278.58 : 214,279.47 = 87,298.43 : x
  2. Step 2: Convert to fraction form
    155,278.58/214,279.47 = 87,298.43/x
  3. Step 3: Cross multiply
    155,278.58x = 214,279.47 × 87,298.43
  4. Step 4: Simplify right side
    155,278.58x = 18,706,260,240.83
  5. Step 5: Solve for x
    x = 18,706,260,240.83/155,278.58
  6. Step 6: Final answer
    x = 120,469.04

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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.