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Finding the Fourth Proportional to 188,518.97, 260,161.15 and 103,638.17

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Solution

The fourth proportional to 188,518.97, 260,161.15 and 103,638.17 is: 143,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,518.97 : 260,161.15 = 103,638.17 : x
  2. Step 2: Convert to fraction form
    188,518.97/260,161.15 = 103,638.17/x
  3. Step 3: Cross multiply
    188,518.97x = 260,161.15 × 103,638.17
  4. Step 4: Simplify right side
    188,518.97x = 26,962,624,972.90
  5. Step 5: Solve for x
    x = 26,962,624,972.90/188,518.97
  6. Step 6: Final answer
    x = 143,023.40

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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.