Home / 387,439.49-581,183.84-103,125.39

Finding the Fourth Proportional to 387,439.49, 581,183.84 and 103,125.39

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Solution

The fourth proportional to 387,439.49, 581,183.84 and 103,125.39 is: 154,694.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,439.49 : 581,183.84 = 103,125.39 : x
  2. Step 2: Convert to fraction form
    387,439.49/581,183.84 = 103,125.39/x
  3. Step 3: Cross multiply
    387,439.49x = 581,183.84 × 103,125.39
  4. Step 4: Simplify right side
    387,439.49x = 59,934,809,646.07
  5. Step 5: Solve for x
    x = 59,934,809,646.07/387,439.49
  6. Step 6: Final answer
    x = 154,694.63

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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.