Home / 138,694,520.86-191,397,961.02-79,956,905.92

Finding the Fourth Proportional to 138,694,520.86, 191,397,961.02 and 79,956,905.92

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Solution

The fourth proportional to 138,694,520.86, 191,397,961.02 and 79,956,905.92 is: 110,340,254.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694,520.86 : 191,397,961.02 = 79,956,905.92 : x
  2. Step 2: Convert to fraction form
    138,694,520.86/191,397,961.02 = 79,956,905.92/x
  3. Step 3: Cross multiply
    138,694,520.86x = 191,397,961.02 × 79,956,905.92
  4. Step 4: Simplify right side
    138,694,520.86x = 15,303,588,762,555,968
  5. Step 5: Solve for x
    x = 15,303,588,762,555,968/138,694,520.86
  6. Step 6: Final answer
    x = 110,340,254.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.