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Finding the Fourth Proportional to 127,574.80, 191,388.03 and 71,494.90

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Solution

The fourth proportional to 127,574.80, 191,388.03 and 71,494.90 is: 107,256.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,574.80 : 191,388.03 = 71,494.90 : x
  2. Step 2: Convert to fraction form
    127,574.80/191,388.03 = 71,494.90/x
  3. Step 3: Cross multiply
    127,574.80x = 191,388.03 × 71,494.90
  4. Step 4: Simplify right side
    127,574.80x = 13,683,268,066.05
  5. Step 5: Solve for x
    x = 13,683,268,066.05/127,574.80
  6. Step 6: Final answer
    x = 107,256.83

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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.