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Finding the Fourth Proportional to 118,370.25, 163,355.81 and 68,069.25

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Solution

The fourth proportional to 118,370.25, 163,355.81 and 68,069.25 is: 93,938.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,370.25 : 163,355.81 = 68,069.25 : x
  2. Step 2: Convert to fraction form
    118,370.25/163,355.81 = 68,069.25/x
  3. Step 3: Cross multiply
    118,370.25x = 163,355.81 × 68,069.25
  4. Step 4: Simplify right side
    118,370.25x = 11,119,507,129.50
  5. Step 5: Solve for x
    x = 11,119,507,129.50/118,370.25
  6. Step 6: Final answer
    x = 93,938.36

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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.