Home / 78,984.30-118,246.05-76,680.30

Finding the Fourth Proportional to 78,984.30, 118,246.05 and 76,680.30

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Solution

The fourth proportional to 78,984.30, 118,246.05 and 76,680.30 is: 114,796.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,984.30 : 118,246.05 = 76,680.30 : x
  2. Step 2: Convert to fraction form
    78,984.30/118,246.05 = 76,680.30/x
  3. Step 3: Cross multiply
    78,984.30x = 118,246.05 × 76,680.30
  4. Step 4: Simplify right side
    78,984.30x = 9,067,142,587.82
  5. Step 5: Solve for x
    x = 9,067,142,587.82/78,984.30
  6. Step 6: Final answer
    x = 114,796.77

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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.