Home / 245,920.15-339,365.75-138,489.85

Finding the Fourth Proportional to 245,920.15, 339,365.75 and 138,489.85

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Solution

The fourth proportional to 245,920.15, 339,365.75 and 138,489.85 is: 191,113.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,920.15 : 339,365.75 = 138,489.85 : x
  2. Step 2: Convert to fraction form
    245,920.15/339,365.75 = 138,489.85/x
  3. Step 3: Cross multiply
    245,920.15x = 339,365.75 × 138,489.85
  4. Step 4: Simplify right side
    245,920.15x = 46,998,712,323.40
  5. Step 5: Solve for x
    x = 46,998,712,323.40/245,920.15
  6. Step 6: Final answer
    x = 191,113.71

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1.5x scale

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.