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Finding the Fourth Proportional to 127,558.80, 191,330.10 and 43,318.80

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Solution

The fourth proportional to 127,558.80, 191,330.10 and 43,318.80 is: 64,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,558.80 : 191,330.10 = 43,318.80 : x
  2. Step 2: Convert to fraction form
    127,558.80/191,330.10 = 43,318.80/x
  3. Step 3: Cross multiply
    127,558.80x = 191,330.10 × 43,318.80
  4. Step 4: Simplify right side
    127,558.80x = 8,288,190,335.88
  5. Step 5: Solve for x
    x = 8,288,190,335.88/127,558.80
  6. Step 6: Final answer
    x = 64,975.45

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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.