Home / 100,704,570.12-138,972,102.96-56,651,599.92

Finding the Fourth Proportional to 100,704,570.12, 138,972,102.96 and 56,651,599.92

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Solution

The fourth proportional to 100,704,570.12, 138,972,102.96 and 56,651,599.92 is: 78,179,093.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,704,570.12 : 138,972,102.96 = 56,651,599.92 : x
  2. Step 2: Convert to fraction form
    100,704,570.12/138,972,102.96 = 56,651,599.92/x
  3. Step 3: Cross multiply
    100,704,570.12x = 138,972,102.96 × 56,651,599.92
  4. Step 4: Simplify right side
    100,704,570.12x = 7,872,991,976,930,968
  5. Step 5: Solve for x
    x = 7,872,991,976,930,968/100,704,570.12
  6. Step 6: Final answer
    x = 78,179,093.24

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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.