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Finding the Fourth Proportional to 189,929.58, 261,846.33 and 121,828.34

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Solution

The fourth proportional to 189,929.58, 261,846.33 and 121,828.34 is: 167,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,929.58 : 261,846.33 = 121,828.34 : x
  2. Step 2: Convert to fraction form
    189,929.58/261,846.33 = 121,828.34/x
  3. Step 3: Cross multiply
    189,929.58x = 261,846.33 × 121,828.34
  4. Step 4: Simplify right side
    189,929.58x = 31,900,303,300.47
  5. Step 5: Solve for x
    x = 31,900,303,300.47/189,929.58
  6. Step 6: Final answer
    x = 167,958.58

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