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Finding the Fourth Proportional to 120,800.61, 166,707.07 and 67,090.64

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Solution

The fourth proportional to 120,800.61, 166,707.07 and 67,090.64 is: 92,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,800.61 : 166,707.07 = 67,090.64 : x
  2. Step 2: Convert to fraction form
    120,800.61/166,707.07 = 67,090.64/x
  3. Step 3: Cross multiply
    120,800.61x = 166,707.07 × 67,090.64
  4. Step 4: Simplify right side
    120,800.61x = 11,184,483,017.56
  5. Step 5: Solve for x
    x = 11,184,483,017.56/120,800.61
  6. Step 6: Final answer
    x = 92,586.31

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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.