Home / 78,662,205.14-108,519,405.66-75,015,191.25

Finding the Fourth Proportional to 78,662,205.14, 108,519,405.66 and 75,015,191.25

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Solution

The fourth proportional to 78,662,205.14, 108,519,405.66 and 75,015,191.25 is: 103,488,123.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,662,205.14 : 108,519,405.66 = 75,015,191.25 : x
  2. Step 2: Convert to fraction form
    78,662,205.14/108,519,405.66 = 75,015,191.25/x
  3. Step 3: Cross multiply
    78,662,205.14x = 108,519,405.66 × 75,015,191.25
  4. Step 4: Simplify right side
    78,662,205.14x = 8,140,603,969,921,232
  5. Step 5: Solve for x
    x = 8,140,603,969,921,232/78,662,205.14
  6. Step 6: Final answer
    x = 103,488,123.12

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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.