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Finding the Fourth Proportional to 146,761.20, 220,141.80 and 127,078.20

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Solution

The fourth proportional to 146,761.20, 220,141.80 and 127,078.20 is: 190,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,761.20 : 220,141.80 = 127,078.20 : x
  2. Step 2: Convert to fraction form
    146,761.20/220,141.80 = 127,078.20/x
  3. Step 3: Cross multiply
    146,761.20x = 220,141.80 × 127,078.20
  4. Step 4: Simplify right side
    146,761.20x = 27,975,223,688.76
  5. Step 5: Solve for x
    x = 27,975,223,688.76/146,761.20
  6. Step 6: Final answer
    x = 190,617.30

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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.