Home / 135,247.48-186,578.64-87,516.24

Finding the Fourth Proportional to 135,247.48, 186,578.64 and 87,516.24

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Solution

The fourth proportional to 135,247.48, 186,578.64 and 87,516.24 is: 120,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,247.48 : 186,578.64 = 87,516.24 : x
  2. Step 2: Convert to fraction form
    135,247.48/186,578.64 = 87,516.24/x
  3. Step 3: Cross multiply
    135,247.48x = 186,578.64 × 87,516.24
  4. Step 4: Simplify right side
    135,247.48x = 16,328,661,037.11
  5. Step 5: Solve for x
    x = 16,328,661,037.11/135,247.48
  6. Step 6: Final answer
    x = 120,731.72

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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.