Home / 158,260.20-218,401.68-86,639.04

Finding the Fourth Proportional to 158,260.20, 218,401.68 and 86,639.04

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Solution

The fourth proportional to 158,260.20, 218,401.68 and 86,639.04 is: 119,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,260.20 : 218,401.68 = 86,639.04 : x
  2. Step 2: Convert to fraction form
    158,260.20/218,401.68 = 86,639.04/x
  3. Step 3: Cross multiply
    158,260.20x = 218,401.68 × 86,639.04
  4. Step 4: Simplify right side
    158,260.20x = 18,922,111,889.59
  5. Step 5: Solve for x
    x = 18,922,111,889.59/158,260.20
  6. Step 6: Final answer
    x = 119,563.30

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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.