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Finding the Fourth Proportional to 117,253.70, 161,858.49 and 83,765.06

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Solution

The fourth proportional to 117,253.70, 161,858.49 and 83,765.06 is: 115,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,253.70 : 161,858.49 = 83,765.06 : x
  2. Step 2: Convert to fraction form
    117,253.70/161,858.49 = 83,765.06/x
  3. Step 3: Cross multiply
    117,253.70x = 161,858.49 × 83,765.06
  4. Step 4: Simplify right side
    117,253.70x = 13,558,086,126.36
  5. Step 5: Solve for x
    x = 13,558,086,126.36/117,253.70
  6. Step 6: Final answer
    x = 115,630.35

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1.5x scale

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.