Home / 155,763.87-214,954.14-84,143.90

Finding the Fourth Proportional to 155,763.87, 214,954.14 and 84,143.90

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Solution

The fourth proportional to 155,763.87, 214,954.14 and 84,143.90 is: 116,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,763.87 : 214,954.14 = 84,143.90 : x
  2. Step 2: Convert to fraction form
    155,763.87/214,954.14 = 84,143.90/x
  3. Step 3: Cross multiply
    155,763.87x = 214,954.14 × 84,143.90
  4. Step 4: Simplify right side
    155,763.87x = 18,087,078,585.98
  5. Step 5: Solve for x
    x = 18,087,078,585.98/155,763.87
  6. Step 6: Final answer
    x = 116,118.57

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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.