Home / 99,929.51-137,902.44-54,607.78

Finding the Fourth Proportional to 99,929.51, 137,902.44 and 54,607.78

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Solution

The fourth proportional to 99,929.51, 137,902.44 and 54,607.78 is: 75,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,929.51 : 137,902.44 = 54,607.78 : x
  2. Step 2: Convert to fraction form
    99,929.51/137,902.44 = 54,607.78/x
  3. Step 3: Cross multiply
    99,929.51x = 137,902.44 × 54,607.78
  4. Step 4: Simplify right side
    99,929.51x = 7,530,546,104.98
  5. Step 5: Solve for x
    x = 7,530,546,104.98/99,929.51
  6. Step 6: Final answer
    x = 75,358.58

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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.