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Finding the Fourth Proportional to 119,805.39, 179,640.65 and 39,800.53

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Solution

The fourth proportional to 119,805.39, 179,640.65 and 39,800.53 is: 59,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,805.39 : 179,640.65 = 39,800.53 : x
  2. Step 2: Convert to fraction form
    119,805.39/179,640.65 = 39,800.53/x
  3. Step 3: Cross multiply
    119,805.39x = 179,640.65 × 39,800.53
  4. Step 4: Simplify right side
    119,805.39x = 7,149,793,403.60
  5. Step 5: Solve for x
    x = 7,149,793,403.60/119,805.39
  6. Step 6: Final answer
    x = 59,678.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.