Home / 387,977.88-581,991.42-121,748.90

Finding the Fourth Proportional to 387,977.88, 581,991.42 and 121,748.90

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Solution

The fourth proportional to 387,977.88, 581,991.42 and 121,748.90 is: 182,631.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,977.88 : 581,991.42 = 121,748.90 : x
  2. Step 2: Convert to fraction form
    387,977.88/581,991.42 = 121,748.90/x
  3. Step 3: Cross multiply
    387,977.88x = 581,991.42 × 121,748.90
  4. Step 4: Simplify right side
    387,977.88x = 70,856,815,194.44
  5. Step 5: Solve for x
    x = 70,856,815,194.44/387,977.88
  6. Step 6: Final answer
    x = 182,631.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.