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Finding the Fourth Proportional to 120,009.86, 180,014.79 and 36,903.86

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Solution

The fourth proportional to 120,009.86, 180,014.79 and 36,903.86 is: 55,355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,009.86 : 180,014.79 = 36,903.86 : x
  2. Step 2: Convert to fraction form
    120,009.86/180,014.79 = 36,903.86/x
  3. Step 3: Cross multiply
    120,009.86x = 180,014.79 × 36,903.86
  4. Step 4: Simplify right side
    120,009.86x = 6,643,240,608.09
  5. Step 5: Solve for x
    x = 6,643,240,608.09/120,009.86
  6. Step 6: Final answer
    x = 55,355.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.