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Finding the Fourth Proportional to 118,604.74, 163,989.48 and 103,657.97

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Solution

The fourth proportional to 118,604.74, 163,989.48 and 103,657.97 is: 143,323.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,604.74 : 163,989.48 = 103,657.97 : x
  2. Step 2: Convert to fraction form
    118,604.74/163,989.48 = 103,657.97/x
  3. Step 3: Cross multiply
    118,604.74x = 163,989.48 × 103,657.97
  4. Step 4: Simplify right side
    118,604.74x = 16,998,816,598.16
  5. Step 5: Solve for x
    x = 16,998,816,598.16/118,604.74
  6. Step 6: Final answer
    x = 143,323.25

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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.