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Finding the Fourth Proportional to 141,855.99, 195,762.60 and 78,196.08

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Solution

The fourth proportional to 141,855.99, 195,762.60 and 78,196.08 is: 107,911.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,855.99 : 195,762.60 = 78,196.08 : x
  2. Step 2: Convert to fraction form
    141,855.99/195,762.60 = 78,196.08/x
  3. Step 3: Cross multiply
    141,855.99x = 195,762.60 × 78,196.08
  4. Step 4: Simplify right side
    141,855.99x = 15,307,867,930.61
  5. Step 5: Solve for x
    x = 15,307,867,930.61/141,855.99
  6. Step 6: Final answer
    x = 107,911.33

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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.