Home / 80,150,280.40-120,303,164.30-38,680,340.78

Finding the Fourth Proportional to 80,150,280.40, 120,303,164.30 and 38,680,340.78

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Solution

The fourth proportional to 80,150,280.40, 120,303,164.30 and 38,680,340.78 is: 58,058,030.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,150,280.40 : 120,303,164.30 = 38,680,340.78 : x
  2. Step 2: Convert to fraction form
    80,150,280.40/120,303,164.30 = 38,680,340.78/x
  3. Step 3: Cross multiply
    80,150,280.40x = 120,303,164.30 × 38,680,340.78
  4. Step 4: Simplify right side
    80,150,280.40x = 4,653,367,392,133,031
  5. Step 5: Solve for x
    x = 4,653,367,392,133,031/80,150,280.40
  6. Step 6: Final answer
    x = 58,058,030.10

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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.