Home / 91,385,995.20-137,078,992.80-87,134,467.20

Finding the Fourth Proportional to 91,385,995.20, 137,078,992.80 and 87,134,467.20

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Solution

The fourth proportional to 91,385,995.20, 137,078,992.80 and 87,134,467.20 is: 130,701,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,385,995.20 : 137,078,992.80 = 87,134,467.20 : x
  2. Step 2: Convert to fraction form
    91,385,995.20/137,078,992.80 = 87,134,467.20/x
  3. Step 3: Cross multiply
    91,385,995.20x = 137,078,992.80 × 87,134,467.20
  4. Step 4: Simplify right side
    91,385,995.20x = 11,944,305,001,940,638
  5. Step 5: Solve for x
    x = 11,944,305,001,940,638/91,385,995.20
  6. Step 6: Final answer
    x = 130,701,700.80

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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.