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Finding the Fourth Proportional to 103,636.50, 143,023.62 and 61,194.12

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Solution

The fourth proportional to 103,636.50, 143,023.62 and 61,194.12 is: 84,450.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.50 : 143,023.62 = 61,194.12 : x
  2. Step 2: Convert to fraction form
    103,636.50/143,023.62 = 61,194.12/x
  3. Step 3: Cross multiply
    103,636.50x = 143,023.62 × 61,194.12
  4. Step 4: Simplify right side
    103,636.50x = 8,752,204,565.11
  5. Step 5: Solve for x
    x = 8,752,204,565.11/103,636.50
  6. Step 6: Final answer
    x = 84,450.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.