Home / 260,133.66-390,200.64-73,145.16

Finding the Fourth Proportional to 260,133.66, 390,200.64 and 73,145.16

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Solution

The fourth proportional to 260,133.66, 390,200.64 and 73,145.16 is: 109,717.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,133.66 : 390,200.64 = 73,145.16 : x
  2. Step 2: Convert to fraction form
    260,133.66/390,200.64 = 73,145.16/x
  3. Step 3: Cross multiply
    260,133.66x = 390,200.64 × 73,145.16
  4. Step 4: Simplify right side
    260,133.66x = 28,541,288,244.90
  5. Step 5: Solve for x
    x = 28,541,288,244.90/260,133.66
  6. Step 6: Final answer
    x = 109,717.78

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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.