Home / 387,983.10-581,999.25-121,754.12

Finding the Fourth Proportional to 387,983.10, 581,999.25 and 121,754.12

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Solution

The fourth proportional to 387,983.10, 581,999.25 and 121,754.12 is: 182,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,983.10 : 581,999.25 = 121,754.12 : x
  2. Step 2: Convert to fraction form
    387,983.10/581,999.25 = 121,754.12/x
  3. Step 3: Cross multiply
    387,983.10x = 581,999.25 × 121,754.12
  4. Step 4: Simplify right side
    387,983.10x = 70,860,806,524.41
  5. Step 5: Solve for x
    x = 70,860,806,524.41/387,983.10
  6. Step 6: Final answer
    x = 182,638.90

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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.