Home / 120,728,000.40-181,115,620.20-51,640,670.40

Finding the Fourth Proportional to 120,728,000.40, 181,115,620.20 and 51,640,670.40

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Solution

The fourth proportional to 120,728,000.40, 181,115,620.20 and 51,640,670.40 is: 77,471,108.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,728,000.40 : 181,115,620.20 = 51,640,670.40 : x
  2. Step 2: Convert to fraction form
    120,728,000.40/181,115,620.20 = 51,640,670.40/x
  3. Step 3: Cross multiply
    120,728,000.40x = 181,115,620.20 × 51,640,670.40
  4. Step 4: Simplify right side
    120,728,000.40x = 9,352,932,047,039,782
  5. Step 5: Solve for x
    x = 9,352,932,047,039,782/120,728,000.40
  6. Step 6: Final answer
    x = 77,471,108.74

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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.