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Finding the Fourth Proportional to 185,603.97, 256,134.15 and 100,721.01

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Solution

The fourth proportional to 185,603.97, 256,134.15 and 100,721.01 is: 138,995.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,603.97 : 256,134.15 = 100,721.01 : x
  2. Step 2: Convert to fraction form
    185,603.97/256,134.15 = 100,721.01/x
  3. Step 3: Cross multiply
    185,603.97x = 256,134.15 × 100,721.01
  4. Step 4: Simplify right side
    185,603.97x = 25,798,090,283.49
  5. Step 5: Solve for x
    x = 25,798,090,283.49/185,603.97
  6. Step 6: Final answer
    x = 138,995.36

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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.