Home / 155,748.58-214,933.05-84,128.61

Finding the Fourth Proportional to 155,748.58, 214,933.05 and 84,128.61

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Solution

The fourth proportional to 155,748.58, 214,933.05 and 84,128.61 is: 116,097.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,748.58 : 214,933.05 = 84,128.61 : x
  2. Step 2: Convert to fraction form
    155,748.58/214,933.05 = 84,128.61/x
  3. Step 3: Cross multiply
    155,748.58x = 214,933.05 × 84,128.61
  4. Step 4: Simplify right side
    155,748.58x = 18,082,018,739.56
  5. Step 5: Solve for x
    x = 18,082,018,739.56/155,748.58
  6. Step 6: Final answer
    x = 116,097.49

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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.