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Finding the Fourth Proportional to 79,243.74, 118,167.17 and 78,533.10

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Solution

The fourth proportional to 79,243.74, 118,167.17 and 78,533.10 is: 117,107.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,243.74 : 118,167.17 = 78,533.10 : x
  2. Step 2: Convert to fraction form
    79,243.74/118,167.17 = 78,533.10/x
  3. Step 3: Cross multiply
    79,243.74x = 118,167.17 × 78,533.10
  4. Step 4: Simplify right side
    79,243.74x = 9,280,033,785.66
  5. Step 5: Solve for x
    x = 9,280,033,785.66/79,243.74
  6. Step 6: Final answer
    x = 117,107.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.