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Finding the Fourth Proportional to 115,203.84, 158,981.04 and 64,902.48

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Solution

The fourth proportional to 115,203.84, 158,981.04 and 64,902.48 is: 89,565.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,203.84 : 158,981.04 = 64,902.48 : x
  2. Step 2: Convert to fraction form
    115,203.84/158,981.04 = 64,902.48/x
  3. Step 3: Cross multiply
    115,203.84x = 158,981.04 × 64,902.48
  4. Step 4: Simplify right side
    115,203.84x = 10,318,263,768.98
  5. Step 5: Solve for x
    x = 10,318,263,768.98/115,203.84
  6. Step 6: Final answer
    x = 89,565.28

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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.