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Finding the Fourth Proportional to 103,656.44, 143,067.30 and 67,779.80

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Solution

The fourth proportional to 103,656.44, 143,067.30 and 67,779.80 is: 93,550.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,656.44 : 143,067.30 = 67,779.80 : x
  2. Step 2: Convert to fraction form
    103,656.44/143,067.30 = 67,779.80/x
  3. Step 3: Cross multiply
    103,656.44x = 143,067.30 × 67,779.80
  4. Step 4: Simplify right side
    103,656.44x = 9,697,072,980.54
  5. Step 5: Solve for x
    x = 9,697,072,980.54/103,656.44
  6. Step 6: Final answer
    x = 93,550.13

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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.