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Finding the Fourth Proportional to 166,861.32, 230,300.64 and 130,490.70

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Solution

The fourth proportional to 166,861.32, 230,300.64 and 130,490.70 is: 180,102.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,861.32 : 230,300.64 = 130,490.70 : x
  2. Step 2: Convert to fraction form
    166,861.32/230,300.64 = 130,490.70/x
  3. Step 3: Cross multiply
    166,861.32x = 230,300.64 × 130,490.70
  4. Step 4: Simplify right side
    166,861.32x = 30,052,091,724.05
  5. Step 5: Solve for x
    x = 30,052,091,724.05/166,861.32
  6. Step 6: Final answer
    x = 180,102.21

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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.