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Finding the Fourth Proportional to 100,960.94, 151,274.01 and 61,398.38

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Solution

The fourth proportional to 100,960.94, 151,274.01 and 61,398.38 is: 91,995.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,960.94 : 151,274.01 = 61,398.38 : x
  2. Step 2: Convert to fraction form
    100,960.94/151,274.01 = 61,398.38/x
  3. Step 3: Cross multiply
    100,960.94x = 151,274.01 × 61,398.38
  4. Step 4: Simplify right side
    100,960.94x = 9,287,979,150.10
  5. Step 5: Solve for x
    x = 9,287,979,150.10/100,960.94
  6. Step 6: Final answer
    x = 91,995.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.