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Finding the Fourth Proportional to 139,778.92, 209,637.42 and 44,983.72

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Solution

The fourth proportional to 139,778.92, 209,637.42 and 44,983.72 is: 67,465.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,778.92 : 209,637.42 = 44,983.72 : x
  2. Step 2: Convert to fraction form
    139,778.92/209,637.42 = 44,983.72/x
  3. Step 3: Cross multiply
    139,778.92x = 209,637.42 × 44,983.72
  4. Step 4: Simplify right side
    139,778.92x = 9,430,271,002.80
  5. Step 5: Solve for x
    x = 9,430,271,002.80/139,778.92
  6. Step 6: Final answer
    x = 67,465.62

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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.