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Finding the Fourth Proportional to 115,385.84, 159,232.20 and 65,084.48

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Solution

The fourth proportional to 115,385.84, 159,232.20 and 65,084.48 is: 89,816.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,385.84 : 159,232.20 = 65,084.48 : x
  2. Step 2: Convert to fraction form
    115,385.84/159,232.20 = 65,084.48/x
  3. Step 3: Cross multiply
    115,385.84x = 159,232.20 × 65,084.48
  4. Step 4: Simplify right side
    115,385.84x = 10,363,544,936.26
  5. Step 5: Solve for x
    x = 10,363,544,936.26/115,385.84
  6. Step 6: Final answer
    x = 89,816.44

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1.5x scale

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.