Home / 155,267.65-214,256.19-87,279.49

Finding the Fourth Proportional to 155,267.65, 214,256.19 and 87,279.49

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Solution

The fourth proportional to 155,267.65, 214,256.19 and 87,279.49 is: 120,438.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,267.65 : 214,256.19 = 87,279.49 : x
  2. Step 2: Convert to fraction form
    155,267.65/214,256.19 = 87,279.49/x
  3. Step 3: Cross multiply
    155,267.65x = 214,256.19 × 87,279.49
  4. Step 4: Simplify right side
    155,267.65x = 18,700,170,992.54
  5. Step 5: Solve for x
    x = 18,700,170,992.54/155,267.65
  6. Step 6: Final answer
    x = 120,438.29

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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.