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Finding the Fourth Proportional to 120,612.86, 166,336.80 and 75,295.03

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Solution

The fourth proportional to 120,612.86, 166,336.80 and 75,295.03 is: 103,839.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,612.86 : 166,336.80 = 75,295.03 : x
  2. Step 2: Convert to fraction form
    120,612.86/166,336.80 = 75,295.03/x
  3. Step 3: Cross multiply
    120,612.86x = 166,336.80 × 75,295.03
  4. Step 4: Simplify right side
    120,612.86x = 12,524,334,346.10
  5. Step 5: Solve for x
    x = 12,524,334,346.10/120,612.86
  6. Step 6: Final answer
    x = 103,839.13

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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.