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Finding the Fourth Proportional to 119,879.93, 165,434.66 and 65,432.60

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Solution

The fourth proportional to 119,879.93, 165,434.66 and 65,432.60 is: 90,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,879.93 : 165,434.66 = 65,432.60 : x
  2. Step 2: Convert to fraction form
    119,879.93/165,434.66 = 65,432.60/x
  3. Step 3: Cross multiply
    119,879.93x = 165,434.66 × 65,432.60
  4. Step 4: Simplify right side
    119,879.93x = 10,824,818,779.58
  5. Step 5: Solve for x
    x = 10,824,818,779.58/119,879.93
  6. Step 6: Final answer
    x = 90,297.18

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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.