Home / 106,068.13-146,372.83-78,965.39

Finding the Fourth Proportional to 106,068.13, 146,372.83 and 78,965.39

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Solution

The fourth proportional to 106,068.13, 146,372.83 and 78,965.39 is: 108,971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,068.13 : 146,372.83 = 78,965.39 : x
  2. Step 2: Convert to fraction form
    106,068.13/146,372.83 = 78,965.39/x
  3. Step 3: Cross multiply
    106,068.13x = 146,372.83 × 78,965.39
  4. Step 4: Simplify right side
    106,068.13x = 11,558,387,774.87
  5. Step 5: Solve for x
    x = 11,558,387,774.87/106,068.13
  6. Step 6: Final answer
    x = 108,971.36

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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.