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Finding the Fourth Proportional to 146,919.60, 220,609.80 and 84,711.60

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Solution

The fourth proportional to 146,919.60, 220,609.80 and 84,711.60 is: 127,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,919.60 : 220,609.80 = 84,711.60 : x
  2. Step 2: Convert to fraction form
    146,919.60/220,609.80 = 84,711.60/x
  3. Step 3: Cross multiply
    146,919.60x = 220,609.80 × 84,711.60
  4. Step 4: Simplify right side
    146,919.60x = 18,688,209,133.68
  5. Step 5: Solve for x
    x = 18,688,209,133.68/146,919.60
  6. Step 6: Final answer
    x = 127,200.25

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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.