Home / 120,258.90-180,416.43-34,871.56

Finding the Fourth Proportional to 120,258.90, 180,416.43 and 34,871.56

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Solution

The fourth proportional to 120,258.90, 180,416.43 and 34,871.56 is: 52,315.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,258.90 : 180,416.43 = 34,871.56 : x
  2. Step 2: Convert to fraction form
    120,258.90/180,416.43 = 34,871.56/x
  3. Step 3: Cross multiply
    120,258.90x = 180,416.43 × 34,871.56
  4. Step 4: Simplify right side
    120,258.90x = 6,291,401,912.69
  5. Step 5: Solve for x
    x = 6,291,401,912.69/120,258.90
  6. Step 6: Final answer
    x = 52,315.48

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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.