Home / 109,515.86-163,976.97-56,814.63

Finding the Fourth Proportional to 109,515.86, 163,976.97 and 56,814.63

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Solution

The fourth proportional to 109,515.86, 163,976.97 and 56,814.63 is: 85,067.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,515.86 : 163,976.97 = 56,814.63 : x
  2. Step 2: Convert to fraction form
    109,515.86/163,976.97 = 56,814.63/x
  3. Step 3: Cross multiply
    109,515.86x = 163,976.97 × 56,814.63
  4. Step 4: Simplify right side
    109,515.86x = 9,316,290,477.21
  5. Step 5: Solve for x
    x = 9,316,290,477.21/109,515.86
  6. Step 6: Final answer
    x = 85,067.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.