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Finding the Fourth Proportional to 106,395.15, 146,835.64 and 79,490.94

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Solution

The fourth proportional to 106,395.15, 146,835.64 and 79,490.94 is: 109,705.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,395.15 : 146,835.64 = 79,490.94 : x
  2. Step 2: Convert to fraction form
    106,395.15/146,835.64 = 79,490.94/x
  3. Step 3: Cross multiply
    106,395.15x = 146,835.64 × 79,490.94
  4. Step 4: Simplify right side
    106,395.15x = 11,672,103,389.62
  5. Step 5: Solve for x
    x = 11,672,103,389.62/106,395.15
  6. Step 6: Final answer
    x = 109,705.23

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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.