Home / 208,320.87-312,578.51-124,078.71

Finding the Fourth Proportional to 208,320.87, 312,578.51 and 124,078.71

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Solution

The fourth proportional to 208,320.87, 312,578.51 and 124,078.71 is: 186,175.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,320.87 : 312,578.51 = 124,078.71 : x
  2. Step 2: Convert to fraction form
    208,320.87/312,578.51 = 124,078.71/x
  3. Step 3: Cross multiply
    208,320.87x = 312,578.51 × 124,078.71
  4. Step 4: Simplify right side
    208,320.87x = 38,784,337,674.13
  5. Step 5: Solve for x
    x = 38,784,337,674.13/208,320.87
  6. Step 6: Final answer
    x = 186,175.96

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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.