Home / 80,380,853.40-120,571,280.10-76,685,698.20

Finding the Fourth Proportional to 80,380,853.40, 120,571,280.10 and 76,685,698.20

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Solution

The fourth proportional to 80,380,853.40, 120,571,280.10 and 76,685,698.20 is: 115,028,547.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,380,853.40 : 120,571,280.10 = 76,685,698.20 : x
  2. Step 2: Convert to fraction form
    80,380,853.40/120,571,280.10 = 76,685,698.20/x
  3. Step 3: Cross multiply
    80,380,853.40x = 120,571,280.10 × 76,685,698.20
  4. Step 4: Simplify right side
    80,380,853.40x = 9,246,092,797,336,266
  5. Step 5: Solve for x
    x = 9,246,092,797,336,266/80,380,853.40
  6. Step 6: Final answer
    x = 115,028,547.30

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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.