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Finding the Fourth Proportional to 139,645.38, 209,477.79 and 46,216.74

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Solution

The fourth proportional to 139,645.38, 209,477.79 and 46,216.74 is: 69,328.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,645.38 : 209,477.79 = 46,216.74 : x
  2. Step 2: Convert to fraction form
    139,645.38/209,477.79 = 46,216.74/x
  3. Step 3: Cross multiply
    139,645.38x = 209,477.79 × 46,216.74
  4. Step 4: Simplify right side
    139,645.38x = 9,681,380,556.20
  5. Step 5: Solve for x
    x = 9,681,380,556.20/139,645.38
  6. Step 6: Final answer
    x = 69,328.33

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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.