Home / 100,704,571.12-138,972,104.34-56,651,600.92

Finding the Fourth Proportional to 100,704,571.12, 138,972,104.34 and 56,651,600.92

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Solution

The fourth proportional to 100,704,571.12, 138,972,104.34 and 56,651,600.92 is: 78,179,094.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,704,571.12 : 138,972,104.34 = 56,651,600.92 : x
  2. Step 2: Convert to fraction form
    100,704,571.12/138,972,104.34 = 56,651,600.92/x
  3. Step 3: Cross multiply
    100,704,571.12x = 138,972,104.34 × 56,651,600.92
  4. Step 4: Simplify right side
    100,704,571.12x = 7,872,992,194,082,280
  5. Step 5: Solve for x
    x = 7,872,992,194,082,280/100,704,571.12
  6. Step 6: Final answer
    x = 78,179,094.62

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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.