Home / 118,578.20-177,001.63-103,631

Finding the Fourth Proportional to 118,578.20, 177,001.63 and 103,631

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Solution

The fourth proportional to 118,578.20, 177,001.63 and 103,631 is: 154,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,578.20 : 177,001.63 = 103,631 : x
  2. Step 2: Convert to fraction form
    118,578.20/177,001.63 = 103,631/x
  3. Step 3: Cross multiply
    118,578.20x = 177,001.63 × 103,631
  4. Step 4: Simplify right side
    118,578.20x = 18,342,855,918.53
  5. Step 5: Solve for x
    x = 18,342,855,918.53/118,578.20
  6. Step 6: Final answer
    x = 154,689.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.