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Finding the Fourth Proportional to 151,369.68, 208,887.68 and 83,393.12

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Solution

The fourth proportional to 151,369.68, 208,887.68 and 83,393.12 is: 115,081.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,369.68 : 208,887.68 = 83,393.12 : x
  2. Step 2: Convert to fraction form
    151,369.68/208,887.68 = 83,393.12/x
  3. Step 3: Cross multiply
    151,369.68x = 208,887.68 × 83,393.12
  4. Step 4: Simplify right side
    151,369.68x = 17,419,795,364.76
  5. Step 5: Solve for x
    x = 17,419,795,364.76/151,369.68
  6. Step 6: Final answer
    x = 115,081.14

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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.