Home / 138,085,184.15-190,562,006.21-78,544,942.53

Finding the Fourth Proportional to 138,085,184.15, 190,562,006.21 and 78,544,942.53

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Solution

The fourth proportional to 138,085,184.15, 190,562,006.21 and 78,544,942.53 is: 108,394,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,085,184.15 : 190,562,006.21 = 78,544,942.53 : x
  2. Step 2: Convert to fraction form
    138,085,184.15/190,562,006.21 = 78,544,942.53/x
  3. Step 3: Cross multiply
    138,085,184.15x = 190,562,006.21 × 78,544,942.53
  4. Step 4: Simplify right side
    138,085,184.15x = 14,967,681,825,773,230
  5. Step 5: Solve for x
    x = 14,967,681,825,773,230/138,085,184.15
  6. Step 6: Final answer
    x = 108,394,553.10

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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.