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Finding the Fourth Proportional to 166,690.40, 230,038.60 and 91,238.96

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Solution

The fourth proportional to 166,690.40, 230,038.60 and 91,238.96 is: 125,912.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,690.40 : 230,038.60 = 91,238.96 : x
  2. Step 2: Convert to fraction form
    166,690.40/230,038.60 = 91,238.96/x
  3. Step 3: Cross multiply
    166,690.40x = 230,038.60 × 91,238.96
  4. Step 4: Simplify right side
    166,690.40x = 20,988,482,623.86
  5. Step 5: Solve for x
    x = 20,988,482,623.86/166,690.40
  6. Step 6: Final answer
    x = 125,912.97

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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.