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Finding the Fourth Proportional to 101,468.56, 140,065.86 and 90,839.74

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Solution

The fourth proportional to 101,468.56, 140,065.86 and 90,839.74 is: 125,393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,468.56 : 140,065.86 = 90,839.74 : x
  2. Step 2: Convert to fraction form
    101,468.56/140,065.86 = 90,839.74/x
  3. Step 3: Cross multiply
    101,468.56x = 140,065.86 × 90,839.74
  4. Step 4: Simplify right side
    101,468.56x = 12,723,546,305.28
  5. Step 5: Solve for x
    x = 12,723,546,305.28/101,468.56
  6. Step 6: Final answer
    x = 125,393.98

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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.