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Finding the Fourth Proportional to 147,003.20, 220,772.10 and 87,954.20

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Solution

The fourth proportional to 147,003.20, 220,772.10 and 87,954.20 is: 132,091.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,003.20 : 220,772.10 = 87,954.20 : x
  2. Step 2: Convert to fraction form
    147,003.20/220,772.10 = 87,954.20/x
  3. Step 3: Cross multiply
    147,003.20x = 220,772.10 × 87,954.20
  4. Step 4: Simplify right side
    147,003.20x = 19,417,833,437.82
  5. Step 5: Solve for x
    x = 19,417,833,437.82/147,003.20
  6. Step 6: Final answer
    x = 132,091.23

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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.