Home / 120,626.74-180,684.96-76,230.64

Finding the Fourth Proportional to 120,626.74, 180,684.96 and 76,230.64

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Solution

The fourth proportional to 120,626.74, 180,684.96 and 76,230.64 is: 114,184.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,626.74 : 180,684.96 = 76,230.64 : x
  2. Step 2: Convert to fraction form
    120,626.74/180,684.96 = 76,230.64/x
  3. Step 3: Cross multiply
    120,626.74x = 180,684.96 × 76,230.64
  4. Step 4: Simplify right side
    120,626.74x = 13,773,730,139.17
  5. Step 5: Solve for x
    x = 13,773,730,139.17/120,626.74
  6. Step 6: Final answer
    x = 114,184.72

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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.