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Finding the Fourth Proportional to 100,076.76, 138,197.76 and 64,329.03

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Solution

The fourth proportional to 100,076.76, 138,197.76 and 64,329.03 is: 88,833.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,076.76 : 138,197.76 = 64,329.03 : x
  2. Step 2: Convert to fraction form
    100,076.76/138,197.76 = 64,329.03/x
  3. Step 3: Cross multiply
    100,076.76x = 138,197.76 × 64,329.03
  4. Step 4: Simplify right side
    100,076.76x = 8,890,127,848.97
  5. Step 5: Solve for x
    x = 8,890,127,848.97/100,076.76
  6. Step 6: Final answer
    x = 88,833.09

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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.