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Finding the Fourth Proportional to 120,008.86, 180,013.29 and 36,902.86

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Solution

The fourth proportional to 120,008.86, 180,013.29 and 36,902.86 is: 55,354.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,008.86 : 180,013.29 = 36,902.86 : x
  2. Step 2: Convert to fraction form
    120,008.86/180,013.29 = 36,902.86/x
  3. Step 3: Cross multiply
    120,008.86x = 180,013.29 × 36,902.86
  4. Step 4: Simplify right side
    120,008.86x = 6,643,005,239.01
  5. Step 5: Solve for x
    x = 6,643,005,239.01/120,008.86
  6. Step 6: Final answer
    x = 55,354.29

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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.