Home / 188,929.30-260,718.53-102,889.79

Finding the Fourth Proportional to 188,929.30, 260,718.53 and 102,889.79

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Solution

The fourth proportional to 188,929.30, 260,718.53 and 102,889.79 is: 141,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,929.30 : 260,718.53 = 102,889.79 : x
  2. Step 2: Convert to fraction form
    188,929.30/260,718.53 = 102,889.79/x
  3. Step 3: Cross multiply
    188,929.30x = 260,718.53 × 102,889.79
  4. Step 4: Simplify right side
    188,929.30x = 26,825,272,982.77
  5. Step 5: Solve for x
    x = 26,825,272,982.77/188,929.30
  6. Step 6: Final answer
    x = 141,985.78

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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.