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Finding the Fourth Proportional to 149,261.52, 205,988.52 and 84,735.28

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Solution

The fourth proportional to 149,261.52, 205,988.52 and 84,735.28 is: 116,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,261.52 : 205,988.52 = 84,735.28 : x
  2. Step 2: Convert to fraction form
    149,261.52/205,988.52 = 84,735.28/x
  3. Step 3: Cross multiply
    149,261.52x = 205,988.52 × 84,735.28
  4. Step 4: Simplify right side
    149,261.52x = 17,454,494,918.99
  5. Step 5: Solve for x
    x = 17,454,494,918.99/149,261.52
  6. Step 6: Final answer
    x = 116,939.01

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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.