Home / 106,342.70-146,763.26-79,438.47

Finding the Fourth Proportional to 106,342.70, 146,763.26 and 79,438.47

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Solution

The fourth proportional to 106,342.70, 146,763.26 and 79,438.47 is: 109,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,342.70 : 146,763.26 = 79,438.47 : x
  2. Step 2: Convert to fraction form
    106,342.70/146,763.26 = 79,438.47/x
  3. Step 3: Cross multiply
    106,342.70x = 146,763.26 × 79,438.47
  4. Step 4: Simplify right side
    106,342.70x = 11,658,648,429.42
  5. Step 5: Solve for x
    x = 11,658,648,429.42/106,342.70
  6. Step 6: Final answer
    x = 109,632.81

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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.