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Finding the Fourth Proportional to 139,805.68, 209,630.76 and 46,286.32

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Solution

The fourth proportional to 139,805.68, 209,630.76 and 46,286.32 is: 69,403.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,805.68 : 209,630.76 = 46,286.32 : x
  2. Step 2: Convert to fraction form
    139,805.68/209,630.76 = 46,286.32/x
  3. Step 3: Cross multiply
    139,805.68x = 209,630.76 × 46,286.32
  4. Step 4: Simplify right side
    139,805.68x = 9,703,036,439.20
  5. Step 5: Solve for x
    x = 9,703,036,439.20/139,805.68
  6. Step 6: Final answer
    x = 69,403.74

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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.