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Finding the Fourth Proportional to 167,321.29, 230,903.67 and 90,840.40

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Solution

The fourth proportional to 167,321.29, 230,903.67 and 90,840.40 is: 125,359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,321.29 : 230,903.67 = 90,840.40 : x
  2. Step 2: Convert to fraction form
    167,321.29/230,903.67 = 90,840.40/x
  3. Step 3: Cross multiply
    167,321.29x = 230,903.67 × 90,840.40
  4. Step 4: Simplify right side
    167,321.29x = 20,975,381,744.27
  5. Step 5: Solve for x
    x = 20,975,381,744.27/167,321.29
  6. Step 6: Final answer
    x = 125,359.91

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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.