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Finding the Fourth Proportional to 119,877.52, 165,430.16 and 66,162.54

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Solution

The fourth proportional to 119,877.52, 165,430.16 and 66,162.54 is: 91,303.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,877.52 : 165,430.16 = 66,162.54 : x
  2. Step 2: Convert to fraction form
    119,877.52/165,430.16 = 66,162.54/x
  3. Step 3: Cross multiply
    119,877.52x = 165,430.16 × 66,162.54
  4. Step 4: Simplify right side
    119,877.52x = 10,945,279,578.21
  5. Step 5: Solve for x
    x = 10,945,279,578.21/119,877.52
  6. Step 6: Final answer
    x = 91,303.85

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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.