Home / 117,934.20-176,609.70-78,276.60

Finding the Fourth Proportional to 117,934.20, 176,609.70 and 78,276.60

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Solution

The fourth proportional to 117,934.20, 176,609.70 and 78,276.60 is: 117,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,934.20 : 176,609.70 = 78,276.60 : x
  2. Step 2: Convert to fraction form
    117,934.20/176,609.70 = 78,276.60/x
  3. Step 3: Cross multiply
    117,934.20x = 176,609.70 × 78,276.60
  4. Step 4: Simplify right side
    117,934.20x = 13,824,406,843.02
  5. Step 5: Solve for x
    x = 13,824,406,843.02/117,934.20
  6. Step 6: Final answer
    x = 117,221.36

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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.