Home / 149,051.86-205,689.50-81,067.36

Finding the Fourth Proportional to 149,051.86, 205,689.50 and 81,067.36

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Solution

The fourth proportional to 149,051.86, 205,689.50 and 81,067.36 is: 111,871.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,051.86 : 205,689.50 = 81,067.36 : x
  2. Step 2: Convert to fraction form
    149,051.86/205,689.50 = 81,067.36/x
  3. Step 3: Cross multiply
    149,051.86x = 205,689.50 × 81,067.36
  4. Step 4: Simplify right side
    149,051.86x = 16,674,704,744.72
  5. Step 5: Solve for x
    x = 16,674,704,744.72/149,051.86
  6. Step 6: Final answer
    x = 111,871.83

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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.