Home / 136,900,998.86-205,213,238.84-85,818,821.90

Finding the Fourth Proportional to 136,900,998.86, 205,213,238.84 and 85,818,821.90

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Solution

The fourth proportional to 136,900,998.86, 205,213,238.84 and 85,818,821.90 is: 128,641,562.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,900,998.86 : 205,213,238.84 = 85,818,821.90 : x
  2. Step 2: Convert to fraction form
    136,900,998.86/205,213,238.84 = 85,818,821.90/x
  3. Step 3: Cross multiply
    136,900,998.86x = 205,213,238.84 × 85,818,821.90
  4. Step 4: Simplify right side
    136,900,998.86x = 17,611,158,394,720,602
  5. Step 5: Solve for x
    x = 17,611,158,394,720,602/136,900,998.86
  6. Step 6: Final answer
    x = 128,641,562.46

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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.