Home / 250,318.68-345,448.08-137,148.72

Finding the Fourth Proportional to 250,318.68, 345,448.08 and 137,148.72

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Solution

The fourth proportional to 250,318.68, 345,448.08 and 137,148.72 is: 189,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,318.68 : 345,448.08 = 137,148.72 : x
  2. Step 2: Convert to fraction form
    250,318.68/345,448.08 = 137,148.72/x
  3. Step 3: Cross multiply
    250,318.68x = 345,448.08 × 137,148.72
  4. Step 4: Simplify right side
    250,318.68x = 47,377,761,998.46
  5. Step 5: Solve for x
    x = 47,377,761,998.46/250,318.68
  6. Step 6: Final answer
    x = 189,269.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.