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Finding the Fourth Proportional to 146,720.64, 220,012.80 and 71,844.48

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Solution

The fourth proportional to 146,720.64, 220,012.80 and 71,844.48 is: 107,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,720.64 : 220,012.80 = 71,844.48 : x
  2. Step 2: Convert to fraction form
    146,720.64/220,012.80 = 71,844.48/x
  3. Step 3: Cross multiply
    146,720.64x = 220,012.80 × 71,844.48
  4. Step 4: Simplify right side
    146,720.64x = 15,806,705,209.34
  5. Step 5: Solve for x
    x = 15,806,705,209.34/146,720.64
  6. Step 6: Final answer
    x = 107,733.34

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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.