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Finding the Fourth Proportional to 118,147.77, 163,039.01 and 64,431.81

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Solution

The fourth proportional to 118,147.77, 163,039.01 and 64,431.81 is: 88,913.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,147.77 : 163,039.01 = 64,431.81 : x
  2. Step 2: Convert to fraction form
    118,147.77/163,039.01 = 64,431.81/x
  3. Step 3: Cross multiply
    118,147.77x = 163,039.01 × 64,431.81
  4. Step 4: Simplify right side
    118,147.77x = 10,504,898,192.75
  5. Step 5: Solve for x
    x = 10,504,898,192.75/118,147.77
  6. Step 6: Final answer
    x = 88,913.22

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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.