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Finding the Fourth Proportional to 76,510.80, 114,766.20 and 68,200.20

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Solution

The fourth proportional to 76,510.80, 114,766.20 and 68,200.20 is: 102,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,510.80 : 114,766.20 = 68,200.20 : x
  2. Step 2: Convert to fraction form
    76,510.80/114,766.20 = 68,200.20/x
  3. Step 3: Cross multiply
    76,510.80x = 114,766.20 × 68,200.20
  4. Step 4: Simplify right side
    76,510.80x = 7,827,077,793.24
  5. Step 5: Solve for x
    x = 7,827,077,793.24/76,510.80
  6. Step 6: Final answer
    x = 102,300.30

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1.5x scale

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.