Home / 260,137.22-390,205.98-73,148.72

Finding the Fourth Proportional to 260,137.22, 390,205.98 and 73,148.72

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Solution

The fourth proportional to 260,137.22, 390,205.98 and 73,148.72 is: 109,723.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,137.22 : 390,205.98 = 73,148.72 : x
  2. Step 2: Convert to fraction form
    260,137.22/390,205.98 = 73,148.72/x
  3. Step 3: Cross multiply
    260,137.22x = 390,205.98 × 73,148.72
  4. Step 4: Simplify right side
    260,137.22x = 28,543,066,022.32
  5. Step 5: Solve for x
    x = 28,543,066,022.32/260,137.22
  6. Step 6: Final answer
    x = 109,723.12

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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.