Home / 118,668.36-178,125.58-79,499.20

Finding the Fourth Proportional to 118,668.36, 178,125.58 and 79,499.20

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Solution

The fourth proportional to 118,668.36, 178,125.58 and 79,499.20 is: 119,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,668.36 : 178,125.58 = 79,499.20 : x
  2. Step 2: Convert to fraction form
    118,668.36/178,125.58 = 79,499.20/x
  3. Step 3: Cross multiply
    118,668.36x = 178,125.58 × 79,499.20
  4. Step 4: Simplify right side
    118,668.36x = 14,160,841,109.54
  5. Step 5: Solve for x
    x = 14,160,841,109.54/118,668.36
  6. Step 6: Final answer
    x = 119,331.23

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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.