Home / 120,105.32-165,751.72-69,125.81

Finding the Fourth Proportional to 120,105.32, 165,751.72 and 69,125.81

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Solution

The fourth proportional to 120,105.32, 165,751.72 and 69,125.81 is: 95,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,105.32 : 165,751.72 = 69,125.81 : x
  2. Step 2: Convert to fraction form
    120,105.32/165,751.72 = 69,125.81/x
  3. Step 3: Cross multiply
    120,105.32x = 165,751.72 × 69,125.81
  4. Step 4: Simplify right side
    120,105.32x = 11,457,720,902.32
  5. Step 5: Solve for x
    x = 11,457,720,902.32/120,105.32
  6. Step 6: Final answer
    x = 95,397.28

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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.