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Finding the Fourth Proportional to 143,359.88, 197,842.10 and 79,702.38

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Solution

The fourth proportional to 143,359.88, 197,842.10 and 79,702.38 is: 109,992.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,359.88 : 197,842.10 = 79,702.38 : x
  2. Step 2: Convert to fraction form
    143,359.88/197,842.10 = 79,702.38/x
  3. Step 3: Cross multiply
    143,359.88x = 197,842.10 × 79,702.38
  4. Step 4: Simplify right side
    143,359.88x = 15,768,485,835.69
  5. Step 5: Solve for x
    x = 15,768,485,835.69/143,359.88
  6. Step 6: Final answer
    x = 109,992.32

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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.