Home / 105,816.86-158,642.07-72,435.74

Finding the Fourth Proportional to 105,816.86, 158,642.07 and 72,435.74

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Solution

The fourth proportional to 105,816.86, 158,642.07 and 72,435.74 is: 108,596.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,816.86 : 158,642.07 = 72,435.74 : x
  2. Step 2: Convert to fraction form
    105,816.86/158,642.07 = 72,435.74/x
  3. Step 3: Cross multiply
    105,816.86x = 158,642.07 × 72,435.74
  4. Step 4: Simplify right side
    105,816.86x = 11,491,355,735.58
  5. Step 5: Solve for x
    x = 11,491,355,735.58/105,816.86
  6. Step 6: Final answer
    x = 108,596.64

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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.