Home / 143,349.98-197,810.82-78,815.76

Finding the Fourth Proportional to 143,349.98, 197,810.82 and 78,815.76

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Solution

The fourth proportional to 143,349.98, 197,810.82 and 78,815.76 is: 108,759.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,349.98 : 197,810.82 = 78,815.76 : x
  2. Step 2: Convert to fraction form
    143,349.98/197,810.82 = 78,815.76/x
  3. Step 3: Cross multiply
    143,349.98x = 197,810.82 × 78,815.76
  4. Step 4: Simplify right side
    143,349.98x = 15,590,610,114.52
  5. Step 5: Solve for x
    x = 15,590,610,114.52/143,349.98
  6. Step 6: Final answer
    x = 108,759.07

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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.