Home / 105,121.22-157,728.02-55,189.71

Finding the Fourth Proportional to 105,121.22, 157,728.02 and 55,189.71

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Solution

The fourth proportional to 105,121.22, 157,728.02 and 55,189.71 is: 82,808.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,121.22 : 157,728.02 = 55,189.71 : x
  2. Step 2: Convert to fraction form
    105,121.22/157,728.02 = 55,189.71/x
  3. Step 3: Cross multiply
    105,121.22x = 157,728.02 × 55,189.71
  4. Step 4: Simplify right side
    105,121.22x = 8,704,963,406.73
  5. Step 5: Solve for x
    x = 8,704,963,406.73/105,121.22
  6. Step 6: Final answer
    x = 82,808.82

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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.