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Finding the Fourth Proportional to 120,313.96, 166,033.58 and 66,602.68

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Solution

The fourth proportional to 120,313.96, 166,033.58 and 66,602.68 is: 91,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,313.96 : 166,033.58 = 66,602.68 : x
  2. Step 2: Convert to fraction form
    120,313.96/166,033.58 = 66,602.68/x
  3. Step 3: Cross multiply
    120,313.96x = 166,033.58 × 66,602.68
  4. Step 4: Simplify right side
    120,313.96x = 11,058,281,397.99
  5. Step 5: Solve for x
    x = 11,058,281,397.99/120,313.96
  6. Step 6: Final answer
    x = 91,911.87

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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.