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Finding the Fourth Proportional to 115,908.42, 159,897.16 and 75,603.90

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Solution

The fourth proportional to 115,908.42, 159,897.16 and 75,603.90 is: 104,296.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,908.42 : 159,897.16 = 75,603.90 : x
  2. Step 2: Convert to fraction form
    115,908.42/159,897.16 = 75,603.90/x
  3. Step 3: Cross multiply
    115,908.42x = 159,897.16 × 75,603.90
  4. Step 4: Simplify right side
    115,908.42x = 12,088,848,894.92
  5. Step 5: Solve for x
    x = 12,088,848,894.92/115,908.42
  6. Step 6: Final answer
    x = 104,296.55

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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.