Home / 107,721.90-148,656.22-62,408.64

Finding the Fourth Proportional to 107,721.90, 148,656.22 and 62,408.64

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Solution

The fourth proportional to 107,721.90, 148,656.22 and 62,408.64 is: 86,123.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,721.90 : 148,656.22 = 62,408.64 : x
  2. Step 2: Convert to fraction form
    107,721.90/148,656.22 = 62,408.64/x
  3. Step 3: Cross multiply
    107,721.90x = 148,656.22 × 62,408.64
  4. Step 4: Simplify right side
    107,721.90x = 9,277,431,979.34
  5. Step 5: Solve for x
    x = 9,277,431,979.34/107,721.90
  6. Step 6: Final answer
    x = 86,123.92

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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.