Home / 199,983.78-299,975.67-138,047.94

Finding the Fourth Proportional to 199,983.78, 299,975.67 and 138,047.94

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Solution

The fourth proportional to 199,983.78, 299,975.67 and 138,047.94 is: 207,071.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,983.78 : 299,975.67 = 138,047.94 : x
  2. Step 2: Convert to fraction form
    199,983.78/299,975.67 = 138,047.94/x
  3. Step 3: Cross multiply
    199,983.78x = 299,975.67 × 138,047.94
  4. Step 4: Simplify right side
    199,983.78x = 41,411,023,293.62
  5. Step 5: Solve for x
    x = 41,411,023,293.62/199,983.78
  6. Step 6: Final answer
    x = 207,071.91

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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.