Home / 100,725.39-139,001.33-55,408.02

Finding the Fourth Proportional to 100,725.39, 139,001.33 and 55,408.02

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Solution

The fourth proportional to 100,725.39, 139,001.33 and 55,408.02 is: 76,463.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,725.39 : 139,001.33 = 55,408.02 : x
  2. Step 2: Convert to fraction form
    100,725.39/139,001.33 = 55,408.02/x
  3. Step 3: Cross multiply
    100,725.39x = 139,001.33 × 55,408.02
  4. Step 4: Simplify right side
    100,725.39x = 7,701,788,089.93
  5. Step 5: Solve for x
    x = 7,701,788,089.93/100,725.39
  6. Step 6: Final answer
    x = 76,463.22

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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.