Home / 120,478.72-166,241.28-75,735.04

Finding the Fourth Proportional to 120,478.72, 166,241.28 and 75,735.04

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Solution

The fourth proportional to 120,478.72, 166,241.28 and 75,735.04 is: 104,502.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,478.72 : 166,241.28 = 75,735.04 : x
  2. Step 2: Convert to fraction form
    120,478.72/166,241.28 = 75,735.04/x
  3. Step 3: Cross multiply
    120,478.72x = 166,241.28 × 75,735.04
  4. Step 4: Simplify right side
    120,478.72x = 12,590,289,990.45
  5. Step 5: Solve for x
    x = 12,590,289,990.45/120,478.72
  6. Step 6: Final answer
    x = 104,502.19

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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.