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Finding the Fourth Proportional to 159,430.78, 239,178.98 and 65,936.53

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Solution

The fourth proportional to 159,430.78, 239,178.98 and 65,936.53 is: 98,918.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,430.78 : 239,178.98 = 65,936.53 : x
  2. Step 2: Convert to fraction form
    159,430.78/239,178.98 = 65,936.53/x
  3. Step 3: Cross multiply
    159,430.78x = 239,178.98 × 65,936.53
  4. Step 4: Simplify right side
    159,430.78x = 15,770,632,083.06
  5. Step 5: Solve for x
    x = 15,770,632,083.06/159,430.78
  6. Step 6: Final answer
    x = 98,918.36

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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.