Home / 387,982.10-581,997.74-121,753.12

Finding the Fourth Proportional to 387,982.10, 581,997.74 and 121,753.12

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Solution

The fourth proportional to 387,982.10, 581,997.74 and 121,753.12 is: 182,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,982.10 : 581,997.74 = 121,753.12 : x
  2. Step 2: Convert to fraction form
    387,982.10/581,997.74 = 121,753.12/x
  3. Step 3: Cross multiply
    387,982.10x = 581,997.74 × 121,753.12
  4. Step 4: Simplify right side
    387,982.10x = 70,860,040,677.95
  5. Step 5: Solve for x
    x = 70,860,040,677.95/387,982.10
  6. Step 6: Final answer
    x = 182,637.40

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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.