Home / 143,848.48-198,511.37-78,436.83

Finding the Fourth Proportional to 143,848.48, 198,511.37 and 78,436.83

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Solution

The fourth proportional to 143,848.48, 198,511.37 and 78,436.83 is: 108,243.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,848.48 : 198,511.37 = 78,436.83 : x
  2. Step 2: Convert to fraction form
    143,848.48/198,511.37 = 78,436.83/x
  3. Step 3: Cross multiply
    143,848.48x = 198,511.37 × 78,436.83
  4. Step 4: Simplify right side
    143,848.48x = 15,570,601,197.02
  5. Step 5: Solve for x
    x = 15,570,601,197.02/143,848.48
  6. Step 6: Final answer
    x = 108,243.07

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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.