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Finding the Fourth Proportional to 100,096.68, 138,127.45 and 54,765.63

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Solution

The fourth proportional to 100,096.68, 138,127.45 and 54,765.63 is: 75,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,096.68 : 138,127.45 = 54,765.63 : x
  2. Step 2: Convert to fraction form
    100,096.68/138,127.45 = 54,765.63/x
  3. Step 3: Cross multiply
    100,096.68x = 138,127.45 × 54,765.63
  4. Step 4: Simplify right side
    100,096.68x = 7,564,636,819.54
  5. Step 5: Solve for x
    x = 7,564,636,819.54/100,096.68
  6. Step 6: Final answer
    x = 75,573.30

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1.5x scale

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.