Home / 187,221.16-280,942.71-68,975.47

Finding the Fourth Proportional to 187,221.16, 280,942.71 and 68,975.47

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Solution

The fourth proportional to 187,221.16, 280,942.71 and 68,975.47 is: 103,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,221.16 : 280,942.71 = 68,975.47 : x
  2. Step 2: Convert to fraction form
    187,221.16/280,942.71 = 68,975.47/x
  3. Step 3: Cross multiply
    187,221.16x = 280,942.71 × 68,975.47
  4. Step 4: Simplify right side
    187,221.16x = 19,378,155,465.32
  5. Step 5: Solve for x
    x = 19,378,155,465.32/187,221.16
  6. Step 6: Final answer
    x = 103,504.09

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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.