Home / 85,212,039.20-127,566,116.40-80,229,178.40

Finding the Fourth Proportional to 85,212,039.20, 127,566,116.40 and 80,229,178.40

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Solution

The fourth proportional to 85,212,039.20, 127,566,116.40 and 80,229,178.40 is: 120,106,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212,039.20 : 127,566,116.40 = 80,229,178.40 : x
  2. Step 2: Convert to fraction form
    85,212,039.20/127,566,116.40 = 80,229,178.40/x
  3. Step 3: Cross multiply
    85,212,039.20x = 127,566,116.40 × 80,229,178.40
  4. Step 4: Simplify right side
    85,212,039.20x = 10,234,524,710,450,766
  5. Step 5: Solve for x
    x = 10,234,524,710,450,766/85,212,039.20
  6. Step 6: Final answer
    x = 120,106,557.79

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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.