Home / 207,021.21-285,687.66-115,141.32

Finding the Fourth Proportional to 207,021.21, 285,687.66 and 115,141.32

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Solution

The fourth proportional to 207,021.21, 285,687.66 and 115,141.32 is: 158,894.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,021.21 : 285,687.66 = 115,141.32 : x
  2. Step 2: Convert to fraction form
    207,021.21/285,687.66 = 115,141.32/x
  3. Step 3: Cross multiply
    207,021.21x = 285,687.66 × 115,141.32
  4. Step 4: Simplify right side
    207,021.21x = 32,894,454,280.11
  5. Step 5: Solve for x
    x = 32,894,454,280.11/207,021.21
  6. Step 6: Final answer
    x = 158,894.13

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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.