Home / 260,099.59-390,149.39-73,111.09

Finding the Fourth Proportional to 260,099.59, 390,149.39 and 73,111.09

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Solution

The fourth proportional to 260,099.59, 390,149.39 and 73,111.09 is: 109,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,099.59 : 390,149.39 = 73,111.09 : x
  2. Step 2: Convert to fraction form
    260,099.59/390,149.39 = 73,111.09/x
  3. Step 3: Cross multiply
    260,099.59x = 390,149.39 × 73,111.09
  4. Step 4: Simplify right side
    260,099.59x = 28,524,247,165.74
  5. Step 5: Solve for x
    x = 28,524,247,165.74/260,099.59
  6. Step 6: Final answer
    x = 109,666.64

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Double scale
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Similar ratio
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1.5x scale

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.