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Finding the Fourth Proportional to 79,159.82, 118,823.09 and 77,374.71

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Solution

The fourth proportional to 79,159.82, 118,823.09 and 77,374.71 is: 116,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,159.82 : 118,823.09 = 77,374.71 : x
  2. Step 2: Convert to fraction form
    79,159.82/118,823.09 = 77,374.71/x
  3. Step 3: Cross multiply
    79,159.82x = 118,823.09 × 77,374.71
  4. Step 4: Simplify right side
    79,159.82x = 9,193,901,743.18
  5. Step 5: Solve for x
    x = 9,193,901,743.18/79,159.82
  6. Step 6: Final answer
    x = 116,143.55

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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.