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Finding the Fourth Proportional to 138,751.94, 208,127.92 and 33,570.91

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Solution

The fourth proportional to 138,751.94, 208,127.92 and 33,570.91 is: 50,356.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,751.94 : 208,127.92 = 33,570.91 : x
  2. Step 2: Convert to fraction form
    138,751.94/208,127.92 = 33,570.91/x
  3. Step 3: Cross multiply
    138,751.94x = 208,127.92 × 33,570.91
  4. Step 4: Simplify right side
    138,751.94x = 6,987,042,462.31
  5. Step 5: Solve for x
    x = 6,987,042,462.31/138,751.94
  6. Step 6: Final answer
    x = 50,356.36

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1.5x scale

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.