Home / 189,287.13-283,650.20-76,830.51

Finding the Fourth Proportional to 189,287.13, 283,650.20 and 76,830.51

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Solution

The fourth proportional to 189,287.13, 283,650.20 and 76,830.51 is: 115,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,287.13 : 283,650.20 = 76,830.51 : x
  2. Step 2: Convert to fraction form
    189,287.13/283,650.20 = 76,830.51/x
  3. Step 3: Cross multiply
    189,287.13x = 283,650.20 × 76,830.51
  4. Step 4: Simplify right side
    189,287.13x = 21,792,989,527.60
  5. Step 5: Solve for x
    x = 21,792,989,527.60/189,287.13
  6. Step 6: Final answer
    x = 115,131.91

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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.