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Finding the Fourth Proportional to 147,476.80, 203,481.44 and 87,048.64

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Solution

The fourth proportional to 147,476.80, 203,481.44 and 87,048.64 is: 120,105.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,476.80 : 203,481.44 = 87,048.64 : x
  2. Step 2: Convert to fraction form
    147,476.80/203,481.44 = 87,048.64/x
  3. Step 3: Cross multiply
    147,476.80x = 203,481.44 × 87,048.64
  4. Step 4: Simplify right side
    147,476.80x = 17,712,782,617.24
  5. Step 5: Solve for x
    x = 17,712,782,617.24/147,476.80
  6. Step 6: Final answer
    x = 120,105.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.