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Finding the Fourth Proportional to 101,979.04, 140,653.20 and 73,778.08

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Solution

The fourth proportional to 101,979.04, 140,653.20 and 73,778.08 is: 101,757.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,979.04 : 140,653.20 = 73,778.08 : x
  2. Step 2: Convert to fraction form
    101,979.04/140,653.20 = 73,778.08/x
  3. Step 3: Cross multiply
    101,979.04x = 140,653.20 × 73,778.08
  4. Step 4: Simplify right side
    101,979.04x = 10,377,123,041.86
  5. Step 5: Solve for x
    x = 10,377,123,041.86/101,979.04
  6. Step 6: Final answer
    x = 101,757.41

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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.