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Finding the Fourth Proportional to 119,645.35, 165,111.70 and 65,932.29

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Solution

The fourth proportional to 119,645.35, 165,111.70 and 65,932.29 is: 90,987.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,645.35 : 165,111.70 = 65,932.29 : x
  2. Step 2: Convert to fraction form
    119,645.35/165,111.70 = 65,932.29/x
  3. Step 3: Cross multiply
    119,645.35x = 165,111.70 × 65,932.29
  4. Step 4: Simplify right side
    119,645.35x = 10,886,192,477.02
  5. Step 5: Solve for x
    x = 10,886,192,477.02/119,645.35
  6. Step 6: Final answer
    x = 90,987.17

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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.