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Finding the Fourth Proportional to 109,171.94, 150,657.84 and 61,426.08

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Solution

The fourth proportional to 109,171.94, 150,657.84 and 61,426.08 is: 84,768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,171.94 : 150,657.84 = 61,426.08 : x
  2. Step 2: Convert to fraction form
    109,171.94/150,657.84 = 61,426.08/x
  3. Step 3: Cross multiply
    109,171.94x = 150,657.84 × 61,426.08
  4. Step 4: Simplify right side
    109,171.94x = 9,254,320,532.47
  5. Step 5: Solve for x
    x = 9,254,320,532.47/109,171.94
  6. Step 6: Final answer
    x = 84,768.31

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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.