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Finding the Fourth Proportional to 166,820.51, 230,212.31 and 91,369.01

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Solution

The fourth proportional to 166,820.51, 230,212.31 and 91,369.01 is: 126,089.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,820.51 : 230,212.31 = 91,369.01 : x
  2. Step 2: Convert to fraction form
    166,820.51/230,212.31 = 91,369.01/x
  3. Step 3: Cross multiply
    166,820.51x = 230,212.31 × 91,369.01
  4. Step 4: Simplify right side
    166,820.51x = 21,034,269,246.61
  5. Step 5: Solve for x
    x = 21,034,269,246.61/166,820.51
  6. Step 6: Final answer
    x = 126,089.23

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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.