Home / 201,749,311.05-278,405,447.12-112,436,502.77

Finding the Fourth Proportional to 201,749,311.05, 278,405,447.12 and 112,436,502.77

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Solution

The fourth proportional to 201,749,311.05, 278,405,447.12 and 112,436,502.77 is: 155,157,579.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,749,311.05 : 278,405,447.12 = 112,436,502.77 : x
  2. Step 2: Convert to fraction form
    201,749,311.05/278,405,447.12 = 112,436,502.77/x
  3. Step 3: Cross multiply
    201,749,311.05x = 278,405,447.12 × 112,436,502.77
  4. Step 4: Simplify right side
    201,749,311.05x = 31,302,934,824,336,760
  5. Step 5: Solve for x
    x = 31,302,934,824,336,760/201,749,311.05
  6. Step 6: Final answer
    x = 155,157,579.78

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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.