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Finding the Fourth Proportional to 84,996.60, 127,203.30 and 77,998.20

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Solution

The fourth proportional to 84,996.60, 127,203.30 and 77,998.20 is: 116,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,996.60 : 127,203.30 = 77,998.20 : x
  2. Step 2: Convert to fraction form
    84,996.60/127,203.30 = 77,998.20/x
  3. Step 3: Cross multiply
    84,996.60x = 127,203.30 × 77,998.20
  4. Step 4: Simplify right side
    84,996.60x = 9,921,628,434.06
  5. Step 5: Solve for x
    x = 9,921,628,434.06/84,996.60
  6. Step 6: Final answer
    x = 116,729.71

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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.