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Finding the Fourth Proportional to 106,636.80, 160,010.40 and 43,503.20

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Solution

The fourth proportional to 106,636.80, 160,010.40 and 43,503.20 is: 65,277.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,636.80 : 160,010.40 = 43,503.20 : x
  2. Step 2: Convert to fraction form
    106,636.80/160,010.40 = 43,503.20/x
  3. Step 3: Cross multiply
    106,636.80x = 160,010.40 × 43,503.20
  4. Step 4: Simplify right side
    106,636.80x = 6,960,964,433.28
  5. Step 5: Solve for x
    x = 6,960,964,433.28/106,636.80
  6. Step 6: Final answer
    x = 65,277.32

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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.