Home / 116,147.52-174,103.65-78,711.39

Finding the Fourth Proportional to 116,147.52, 174,103.65 and 78,711.39

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Solution

The fourth proportional to 116,147.52, 174,103.65 and 78,711.39 is: 117,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,147.52 : 174,103.65 = 78,711.39 : x
  2. Step 2: Convert to fraction form
    116,147.52/174,103.65 = 78,711.39/x
  3. Step 3: Cross multiply
    116,147.52x = 174,103.65 × 78,711.39
  4. Step 4: Simplify right side
    116,147.52x = 13,703,940,295.57
  5. Step 5: Solve for x
    x = 13,703,940,295.57/116,147.52
  6. Step 6: Final answer
    x = 117,987.37

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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.