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Finding the Fourth Proportional to 146,857.60, 220,113.60 and 76,700.80

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Solution

The fourth proportional to 146,857.60, 220,113.60 and 76,700.80 is: 114,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,857.60 : 220,113.60 = 76,700.80 : x
  2. Step 2: Convert to fraction form
    146,857.60/220,113.60 = 76,700.80/x
  3. Step 3: Cross multiply
    146,857.60x = 220,113.60 × 76,700.80
  4. Step 4: Simplify right side
    146,857.60x = 16,882,889,210.88
  5. Step 5: Solve for x
    x = 16,882,889,210.88/146,857.60
  6. Step 6: Final answer
    x = 114,960.95

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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.