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Finding the Fourth Proportional to 149,076.65, 205,731.27 and 85,426.75

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Solution

The fourth proportional to 149,076.65, 205,731.27 and 85,426.75 is: 117,892.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,076.65 : 205,731.27 = 85,426.75 : x
  2. Step 2: Convert to fraction form
    149,076.65/205,731.27 = 85,426.75/x
  3. Step 3: Cross multiply
    149,076.65x = 205,731.27 × 85,426.75
  4. Step 4: Simplify right side
    149,076.65x = 17,574,953,769.47
  5. Step 5: Solve for x
    x = 17,574,953,769.47/149,076.65
  6. Step 6: Final answer
    x = 117,892.06

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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.