Home / 205,728.30-283,931.19-115,089.30

Finding the Fourth Proportional to 205,728.30, 283,931.19 and 115,089.30

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Solution

The fourth proportional to 205,728.30, 283,931.19 and 115,089.30 is: 158,837.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,728.30 : 283,931.19 = 115,089.30 : x
  2. Step 2: Convert to fraction form
    205,728.30/283,931.19 = 115,089.30/x
  3. Step 3: Cross multiply
    205,728.30x = 283,931.19 × 115,089.30
  4. Step 4: Simplify right side
    205,728.30x = 32,677,441,905.27
  5. Step 5: Solve for x
    x = 32,677,441,905.27/205,728.30
  6. Step 6: Final answer
    x = 158,837.86

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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.