Home / 137,149,008.48-205,781,159.22-85,376,936.64

Finding the Fourth Proportional to 137,149,008.48, 205,781,159.22 and 85,376,936.64

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Solution

The fourth proportional to 137,149,008.48, 205,781,159.22 and 85,376,936.64 is: 128,101,290.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,149,008.48 : 205,781,159.22 = 85,376,936.64 : x
  2. Step 2: Convert to fraction form
    137,149,008.48/205,781,159.22 = 85,376,936.64/x
  3. Step 3: Cross multiply
    137,149,008.48x = 205,781,159.22 × 85,376,936.64
  4. Step 4: Simplify right side
    137,149,008.48x = 17,568,964,992,431,692
  5. Step 5: Solve for x
    x = 17,568,964,992,431,692/137,149,008.48
  6. Step 6: Final answer
    x = 128,101,290.61

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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.