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Finding the Fourth Proportional to 115,655, 159,603.90 and 62,663

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Solution

The fourth proportional to 115,655, 159,603.90 and 62,663 is: 86,474.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,655 : 159,603.90 = 62,663 : x
  2. Step 2: Convert to fraction form
    115,655/159,603.90 = 62,663/x
  3. Step 3: Cross multiply
    115,655x = 159,603.90 × 62,663
  4. Step 4: Simplify right side
    115,655x = 10,001,259,185.70
  5. Step 5: Solve for x
    x = 10,001,259,185.70/115,655
  6. Step 6: Final answer
    x = 86,474.94

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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.