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Finding the Fourth Proportional to 137,992,415.90, 206,943,843.81 and 45,851,410.22

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Solution

The fourth proportional to 137,992,415.90, 206,943,843.81 and 45,851,410.22 is: 68,762,236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,992,415.90 : 206,943,843.81 = 45,851,410.22 : x
  2. Step 2: Convert to fraction form
    137,992,415.90/206,943,843.81 = 45,851,410.22/x
  3. Step 3: Cross multiply
    137,992,415.90x = 206,943,843.81 × 45,851,410.22
  4. Step 4: Simplify right side
    137,992,415.90x = 9,488,667,075,035,918
  5. Step 5: Solve for x
    x = 9,488,667,075,035,918/137,992,415.90
  6. Step 6: Final answer
    x = 68,762,236.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.