Home / 345,401.39-518,149.23-120,709.68

Finding the Fourth Proportional to 345,401.39, 518,149.23 and 120,709.68

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Solution

The fourth proportional to 345,401.39, 518,149.23 and 120,709.68 is: 181,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,401.39 : 518,149.23 = 120,709.68 : x
  2. Step 2: Convert to fraction form
    345,401.39/518,149.23 = 120,709.68/x
  3. Step 3: Cross multiply
    345,401.39x = 518,149.23 × 120,709.68
  4. Step 4: Simplify right side
    345,401.39x = 62,545,627,745.55
  5. Step 5: Solve for x
    x = 62,545,627,745.55/345,401.39
  6. Step 6: Final answer
    x = 181,081.00

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1.5x scale

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.