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Finding the Fourth Proportional to 146,856.60, 220,112.10 and 76,699.80

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Solution

The fourth proportional to 146,856.60, 220,112.10 and 76,699.80 is: 114,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,856.60 : 220,112.10 = 76,699.80 : x
  2. Step 2: Convert to fraction form
    146,856.60/220,112.10 = 76,699.80/x
  3. Step 3: Cross multiply
    146,856.60x = 220,112.10 × 76,699.80
  4. Step 4: Simplify right side
    146,856.60x = 16,882,554,047.58
  5. Step 5: Solve for x
    x = 16,882,554,047.58/146,856.60
  6. Step 6: Final answer
    x = 114,959.45

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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.