Home / 138,023,998.20-207,035,997.30-40,994,681.40

Finding the Fourth Proportional to 138,023,998.20, 207,035,997.30 and 40,994,681.40

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Solution

The fourth proportional to 138,023,998.20, 207,035,997.30 and 40,994,681.40 is: 61,492,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023,998.20 : 207,035,997.30 = 40,994,681.40 : x
  2. Step 2: Convert to fraction form
    138,023,998.20/207,035,997.30 = 40,994,681.40/x
  3. Step 3: Cross multiply
    138,023,998.20x = 207,035,997.30 × 40,994,681.40
  4. Step 4: Simplify right side
    138,023,998.20x = 8,487,374,747,644,760
  5. Step 5: Solve for x
    x = 8,487,374,747,644,760/138,023,998.20
  6. Step 6: Final answer
    x = 61,492,022.10

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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.