Home / 188,990.28-260,806.53-104,109.12

Finding the Fourth Proportional to 188,990.28, 260,806.53 and 104,109.12

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Solution

The fourth proportional to 188,990.28, 260,806.53 and 104,109.12 is: 143,670.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,990.28 : 260,806.53 = 104,109.12 : x
  2. Step 2: Convert to fraction form
    188,990.28/260,806.53 = 104,109.12/x
  3. Step 3: Cross multiply
    188,990.28x = 260,806.53 × 104,109.12
  4. Step 4: Simplify right side
    188,990.28x = 27,152,338,328.55
  5. Step 5: Solve for x
    x = 27,152,338,328.55/188,990.28
  6. Step 6: Final answer
    x = 143,670.55

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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.