Home / 109,962.75-165,768.12-102,639

Finding the Fourth Proportional to 109,962.75, 165,768.12 and 102,639

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Solution

The fourth proportional to 109,962.75, 165,768.12 and 102,639 is: 154,727.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,962.75 : 165,768.12 = 102,639 : x
  2. Step 2: Convert to fraction form
    109,962.75/165,768.12 = 102,639/x
  3. Step 3: Cross multiply
    109,962.75x = 165,768.12 × 102,639
  4. Step 4: Simplify right side
    109,962.75x = 17,014,274,068.68
  5. Step 5: Solve for x
    x = 17,014,274,068.68/109,962.75
  6. Step 6: Final answer
    x = 154,727.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.