Home / 213,351.15-320,025.57-86,990.91

Finding the Fourth Proportional to 213,351.15, 320,025.57 and 86,990.91

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Solution

The fourth proportional to 213,351.15, 320,025.57 and 86,990.91 is: 130,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,351.15 : 320,025.57 = 86,990.91 : x
  2. Step 2: Convert to fraction form
    213,351.15/320,025.57 = 86,990.91/x
  3. Step 3: Cross multiply
    213,351.15x = 320,025.57 × 86,990.91
  4. Step 4: Simplify right side
    213,351.15x = 27,839,315,557.57
  5. Step 5: Solve for x
    x = 27,839,315,557.57/213,351.15
  6. Step 6: Final answer
    x = 130,485.89

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1.5x scale

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.