Home / 260,110.39-390,165.58-73,121.89

Finding the Fourth Proportional to 260,110.39, 390,165.58 and 73,121.89

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Solution

The fourth proportional to 260,110.39, 390,165.58 and 73,121.89 is: 109,682.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,110.39 : 390,165.58 = 73,121.89 : x
  2. Step 2: Convert to fraction form
    260,110.39/390,165.58 = 73,121.89/x
  3. Step 3: Cross multiply
    260,110.39x = 390,165.58 × 73,121.89
  4. Step 4: Simplify right side
    260,110.39x = 28,529,644,622.55
  5. Step 5: Solve for x
    x = 28,529,644,622.55/260,110.39
  6. Step 6: Final answer
    x = 109,682.83

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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.