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Finding the Fourth Proportional to 101,470.32, 140,019.51 and 68,698.07

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Solution

The fourth proportional to 101,470.32, 140,019.51 and 68,698.07 is: 94,796.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,470.32 : 140,019.51 = 68,698.07 : x
  2. Step 2: Convert to fraction form
    101,470.32/140,019.51 = 68,698.07/x
  3. Step 3: Cross multiply
    101,470.32x = 140,019.51 × 68,698.07
  4. Step 4: Simplify right side
    101,470.32x = 9,619,070,099.35
  5. Step 5: Solve for x
    x = 9,619,070,099.35/101,470.32
  6. Step 6: Final answer
    x = 94,796.88

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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.