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Finding the Fourth Proportional to 120,005.36, 180,008.04 and 36,899.36

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Solution

The fourth proportional to 120,005.36, 180,008.04 and 36,899.36 is: 55,349.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,005.36 : 180,008.04 = 36,899.36 : x
  2. Step 2: Convert to fraction form
    120,005.36/180,008.04 = 36,899.36/x
  3. Step 3: Cross multiply
    120,005.36x = 180,008.04 × 36,899.36
  4. Step 4: Simplify right side
    120,005.36x = 6,642,181,470.85
  5. Step 5: Solve for x
    x = 6,642,181,470.85/120,005.36
  6. Step 6: Final answer
    x = 55,349.04

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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.