Home / 78,824.20-118,236.30-77,528.20

Finding the Fourth Proportional to 78,824.20, 118,236.30 and 77,528.20

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Solution

The fourth proportional to 78,824.20, 118,236.30 and 77,528.20 is: 116,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,824.20 : 118,236.30 = 77,528.20 : x
  2. Step 2: Convert to fraction form
    78,824.20/118,236.30 = 77,528.20/x
  3. Step 3: Cross multiply
    78,824.20x = 118,236.30 × 77,528.20
  4. Step 4: Simplify right side
    78,824.20x = 9,166,647,513.66
  5. Step 5: Solve for x
    x = 9,166,647,513.66/78,824.20
  6. Step 6: Final answer
    x = 116,292.30

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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.