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Finding the Fourth Proportional to 118,718.93, 163,832.11 and 65,003.94

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Solution

The fourth proportional to 118,718.93, 163,832.11 and 65,003.94 is: 89,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,718.93 : 163,832.11 = 65,003.94 : x
  2. Step 2: Convert to fraction form
    118,718.93/163,832.11 = 65,003.94/x
  3. Step 3: Cross multiply
    118,718.93x = 163,832.11 × 65,003.94
  4. Step 4: Simplify right side
    118,718.93x = 10,649,732,486.00
  5. Step 5: Solve for x
    x = 10,649,732,486.00/118,718.93
  6. Step 6: Final answer
    x = 89,705.43

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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.