Home / 85,211,900.20-127,565,907.90-80,229,039.40

Finding the Fourth Proportional to 85,211,900.20, 127,565,907.90 and 80,229,039.40

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Solution

The fourth proportional to 85,211,900.20, 127,565,907.90 and 80,229,039.40 is: 120,106,349.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211,900.20 : 127,565,907.90 = 80,229,039.40 : x
  2. Step 2: Convert to fraction form
    85,211,900.20/127,565,907.90 = 80,229,039.40/x
  3. Step 3: Cross multiply
    85,211,900.20x = 127,565,907.90 × 80,229,039.40
  4. Step 4: Simplify right side
    85,211,900.20x = 10,234,490,251,005,872
  5. Step 5: Solve for x
    x = 10,234,490,251,005,872/85,211,900.20
  6. Step 6: Final answer
    x = 120,106,349.31

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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.