Home / 120,428.76-180,544.68-45,506.46

Finding the Fourth Proportional to 120,428.76, 180,544.68 and 45,506.46

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Solution

The fourth proportional to 120,428.76, 180,544.68 and 45,506.46 is: 68,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,428.76 : 180,544.68 = 45,506.46 : x
  2. Step 2: Convert to fraction form
    120,428.76/180,544.68 = 45,506.46/x
  3. Step 3: Cross multiply
    120,428.76x = 180,544.68 × 45,506.46
  4. Step 4: Simplify right side
    120,428.76x = 8,215,949,258.63
  5. Step 5: Solve for x
    x = 8,215,949,258.63/120,428.76
  6. Step 6: Final answer
    x = 68,222.48

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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.