Home / 190,087,956.40-285,251,879.80-80,912,953.12

Finding the Fourth Proportional to 190,087,956.40, 285,251,879.80 and 80,912,953.12

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Solution

The fourth proportional to 190,087,956.40, 285,251,879.80 and 80,912,953.12 is: 121,420,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,087,956.40 : 285,251,879.80 = 80,912,953.12 : x
  2. Step 2: Convert to fraction form
    190,087,956.40/285,251,879.80 = 80,912,953.12/x
  3. Step 3: Cross multiply
    190,087,956.40x = 285,251,879.80 × 80,912,953.12
  4. Step 4: Simplify right side
    190,087,956.40x = 23,080,571,977,649,276
  5. Step 5: Solve for x
    x = 23,080,571,977,649,276/190,087,956.40
  6. Step 6: Final answer
    x = 121,420,485.63

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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.