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Finding the Fourth Proportional to 109,661.80, 164,492.70 and 43,104.10

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Solution

The fourth proportional to 109,661.80, 164,492.70 and 43,104.10 is: 64,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,661.80 : 164,492.70 = 43,104.10 : x
  2. Step 2: Convert to fraction form
    109,661.80/164,492.70 = 43,104.10/x
  3. Step 3: Cross multiply
    109,661.80x = 164,492.70 × 43,104.10
  4. Step 4: Simplify right side
    109,661.80x = 7,090,309,790.07
  5. Step 5: Solve for x
    x = 7,090,309,790.07/109,661.80
  6. Step 6: Final answer
    x = 64,656.15

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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.