Home / 120,488.21-180,690.62-49,390.66

Finding the Fourth Proportional to 120,488.21, 180,690.62 and 49,390.66

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Solution

The fourth proportional to 120,488.21, 180,690.62 and 49,390.66 is: 74,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,488.21 : 180,690.62 = 49,390.66 : x
  2. Step 2: Convert to fraction form
    120,488.21/180,690.62 = 49,390.66/x
  3. Step 3: Cross multiply
    120,488.21x = 180,690.62 × 49,390.66
  4. Step 4: Simplify right side
    120,488.21x = 8,924,429,373.25
  5. Step 5: Solve for x
    x = 8,924,429,373.25/120,488.21
  6. Step 6: Final answer
    x = 74,068.90

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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.