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Finding the Fourth Proportional to 119,645.98, 165,118.70 and 65,930.94

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Solution

The fourth proportional to 119,645.98, 165,118.70 and 65,930.94 is: 90,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,645.98 : 165,118.70 = 65,930.94 : x
  2. Step 2: Convert to fraction form
    119,645.98/165,118.70 = 65,930.94/x
  3. Step 3: Cross multiply
    119,645.98x = 165,118.70 × 65,930.94
  4. Step 4: Simplify right side
    119,645.98x = 10,886,431,102.58
  5. Step 5: Solve for x
    x = 10,886,431,102.58/119,645.98
  6. Step 6: Final answer
    x = 90,988.69

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1.5x scale

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.