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Finding the Fourth Proportional to 115,328.10, 172,992.15 and 109,884.90

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Solution

The fourth proportional to 115,328.10, 172,992.15 and 109,884.90 is: 164,827.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,328.10 : 172,992.15 = 109,884.90 : x
  2. Step 2: Convert to fraction form
    115,328.10/172,992.15 = 109,884.90/x
  3. Step 3: Cross multiply
    115,328.10x = 172,992.15 × 109,884.90
  4. Step 4: Simplify right side
    115,328.10x = 19,009,225,103.54
  5. Step 5: Solve for x
    x = 19,009,225,103.54/115,328.10
  6. Step 6: Final answer
    x = 164,827.35

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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.