Home / 155,038.20-213,949.99-87,055.71

Finding the Fourth Proportional to 155,038.20, 213,949.99 and 87,055.71

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Solution

The fourth proportional to 155,038.20, 213,949.99 and 87,055.71 is: 120,135.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,038.20 : 213,949.99 = 87,055.71 : x
  2. Step 2: Convert to fraction form
    155,038.20/213,949.99 = 87,055.71/x
  3. Step 3: Cross multiply
    155,038.20x = 213,949.99 × 87,055.71
  4. Step 4: Simplify right side
    155,038.20x = 18,625,568,283.94
  5. Step 5: Solve for x
    x = 18,625,568,283.94/155,038.20
  6. Step 6: Final answer
    x = 120,135.35

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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.