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Finding the Fourth Proportional to 118,735.76, 163,855.64 and 64,288.48

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Solution

The fourth proportional to 118,735.76, 163,855.64 and 64,288.48 is: 88,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,735.76 : 163,855.64 = 64,288.48 : x
  2. Step 2: Convert to fraction form
    118,735.76/163,855.64 = 64,288.48/x
  3. Step 3: Cross multiply
    118,735.76x = 163,855.64 × 64,288.48
  4. Step 4: Simplify right side
    118,735.76x = 10,534,030,035.03
  5. Step 5: Solve for x
    x = 10,534,030,035.03/118,735.76
  6. Step 6: Final answer
    x = 88,718.26

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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.