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Finding the Fourth Proportional to 108,963.99, 163,455.39 and 30,078.23

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Solution

The fourth proportional to 108,963.99, 163,455.39 and 30,078.23 is: 45,119.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,963.99 : 163,455.39 = 30,078.23 : x
  2. Step 2: Convert to fraction form
    108,963.99/163,455.39 = 30,078.23/x
  3. Step 3: Cross multiply
    108,963.99x = 163,455.39 × 30,078.23
  4. Step 4: Simplify right side
    108,963.99x = 4,916,447,997.88
  5. Step 5: Solve for x
    x = 4,916,447,997.88/108,963.99
  6. Step 6: Final answer
    x = 45,119.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.