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Finding the Fourth Proportional to 167,146.65, 230,661 and 90,665.55

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Solution

The fourth proportional to 167,146.65, 230,661 and 90,665.55 is: 125,117.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,146.65 : 230,661 = 90,665.55 : x
  2. Step 2: Convert to fraction form
    167,146.65/230,661 = 90,665.55/x
  3. Step 3: Cross multiply
    167,146.65x = 230,661 × 90,665.55
  4. Step 4: Simplify right side
    167,146.65x = 20,913,006,428.55
  5. Step 5: Solve for x
    x = 20,913,006,428.55/167,146.65
  6. Step 6: Final answer
    x = 125,117.71

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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.