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Finding the Fourth Proportional to 175,291.80, 262,635.30 and 81,605.40

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Solution

The fourth proportional to 175,291.80, 262,635.30 and 81,605.40 is: 122,267.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,291.80 : 262,635.30 = 81,605.40 : x
  2. Step 2: Convert to fraction form
    175,291.80/262,635.30 = 81,605.40/x
  3. Step 3: Cross multiply
    175,291.80x = 262,635.30 × 81,605.40
  4. Step 4: Simplify right side
    175,291.80x = 21,432,458,710.62
  5. Step 5: Solve for x
    x = 21,432,458,710.62/175,291.80
  6. Step 6: Final answer
    x = 122,267.32

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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.