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Finding the Fourth Proportional to 106,398.72, 146,840.57 and 79,494.52

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Solution

The fourth proportional to 106,398.72, 146,840.57 and 79,494.52 is: 109,710.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,398.72 : 146,840.57 = 79,494.52 : x
  2. Step 2: Convert to fraction form
    106,398.72/146,840.57 = 79,494.52/x
  3. Step 3: Cross multiply
    106,398.72x = 146,840.57 × 79,494.52
  4. Step 4: Simplify right side
    106,398.72x = 11,673,020,628.68
  5. Step 5: Solve for x
    x = 11,673,020,628.68/106,398.72
  6. Step 6: Final answer
    x = 109,710.16

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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.