Home / 80,454,857.15-120,682,285.73-72,392,700.35

Finding the Fourth Proportional to 80,454,857.15, 120,682,285.73 and 72,392,700.35

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Solution

The fourth proportional to 80,454,857.15, 120,682,285.73 and 72,392,700.35 is: 108,589,050.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,857.15 : 120,682,285.73 = 72,392,700.35 : x
  2. Step 2: Convert to fraction form
    80,454,857.15/120,682,285.73 = 72,392,700.35/x
  3. Step 3: Cross multiply
    80,454,857.15x = 120,682,285.73 × 72,392,700.35
  4. Step 4: Simplify right side
    80,454,857.15x = 8,736,516,548,404,971
  5. Step 5: Solve for x
    x = 8,736,516,548,404,971/80,454,857.15
  6. Step 6: Final answer
    x = 108,589,050.53

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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.