Home / 137,605.53-189,719.85-89,121.80

Finding the Fourth Proportional to 137,605.53, 189,719.85 and 89,121.80

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Solution

The fourth proportional to 137,605.53, 189,719.85 and 89,121.80 is: 122,874.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,605.53 : 189,719.85 = 89,121.80 : x
  2. Step 2: Convert to fraction form
    137,605.53/189,719.85 = 89,121.80/x
  3. Step 3: Cross multiply
    137,605.53x = 189,719.85 × 89,121.80
  4. Step 4: Simplify right side
    137,605.53x = 16,908,175,336.24
  5. Step 5: Solve for x
    x = 16,908,175,336.24/137,605.53
  6. Step 6: Final answer
    x = 122,874.24

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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.