Home / 78,662,198.76-108,519,396.86-75,015,184.88

Finding the Fourth Proportional to 78,662,198.76, 108,519,396.86 and 75,015,184.88

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Solution

The fourth proportional to 78,662,198.76, 108,519,396.86 and 75,015,184.88 is: 103,488,114.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,662,198.76 : 108,519,396.86 = 75,015,184.88 : x
  2. Step 2: Convert to fraction form
    78,662,198.76/108,519,396.86 = 75,015,184.88/x
  3. Step 3: Cross multiply
    78,662,198.76x = 108,519,396.86 × 75,015,184.88
  4. Step 4: Simplify right side
    78,662,198.76x = 8,140,602,618,163,932
  5. Step 5: Solve for x
    x = 8,140,602,618,163,932/78,662,198.76
  6. Step 6: Final answer
    x = 103,488,114.32

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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.