Home / 123,640.52-185,497.74-87,686.24

Finding the Fourth Proportional to 123,640.52, 185,497.74 and 87,686.24

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Solution

The fourth proportional to 123,640.52, 185,497.74 and 87,686.24 is: 131,555.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,640.52 : 185,497.74 = 87,686.24 : x
  2. Step 2: Convert to fraction form
    123,640.52/185,497.74 = 87,686.24/x
  3. Step 3: Cross multiply
    123,640.52x = 185,497.74 × 87,686.24
  4. Step 4: Simplify right side
    123,640.52x = 16,265,599,349.10
  5. Step 5: Solve for x
    x = 16,265,599,349.10/123,640.52
  6. Step 6: Final answer
    x = 131,555.57

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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.