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Finding the Fourth Proportional to 166,987.31, 230,457.08 and 91,550.39

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Solution

The fourth proportional to 166,987.31, 230,457.08 and 91,550.39 is: 126,347.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,987.31 : 230,457.08 = 91,550.39 : x
  2. Step 2: Convert to fraction form
    166,987.31/230,457.08 = 91,550.39/x
  3. Step 3: Cross multiply
    166,987.31x = 230,457.08 × 91,550.39
  4. Step 4: Simplify right side
    166,987.31x = 21,098,435,670.65
  5. Step 5: Solve for x
    x = 21,098,435,670.65/166,987.31
  6. Step 6: Final answer
    x = 126,347.54

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1.5x scale

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.