Home / 260,105.87-390,158.79-73,117.37

Finding the Fourth Proportional to 260,105.87, 390,158.79 and 73,117.37

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Solution

The fourth proportional to 260,105.87, 390,158.79 and 73,117.37 is: 109,676.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,105.87 : 390,158.79 = 73,117.37 : x
  2. Step 2: Convert to fraction form
    260,105.87/390,158.79 = 73,117.37/x
  3. Step 3: Cross multiply
    260,105.87x = 390,158.79 × 73,117.37
  4. Step 4: Simplify right side
    260,105.87x = 28,527,384,607.18
  5. Step 5: Solve for x
    x = 28,527,384,607.18/260,105.87
  6. Step 6: Final answer
    x = 109,676.05

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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.