Home / 143,374.91-197,860.59-78,840.06

Finding the Fourth Proportional to 143,374.91, 197,860.59 and 78,840.06

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Solution

The fourth proportional to 143,374.91, 197,860.59 and 78,840.06 is: 108,801.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,374.91 : 197,860.59 = 78,840.06 : x
  2. Step 2: Convert to fraction form
    143,374.91/197,860.59 = 78,840.06/x
  3. Step 3: Cross multiply
    143,374.91x = 197,860.59 × 78,840.06
  4. Step 4: Simplify right side
    143,374.91x = 15,599,339,403.73
  5. Step 5: Solve for x
    x = 15,599,339,403.73/143,374.91
  6. Step 6: Final answer
    x = 108,801.04

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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.