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Finding the Fourth Proportional to 186,089.67, 279,028.80 and 126,996.93

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Solution

The fourth proportional to 186,089.67, 279,028.80 and 126,996.93 is: 190,423.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,089.67 : 279,028.80 = 126,996.93 : x
  2. Step 2: Convert to fraction form
    186,089.67/279,028.80 = 126,996.93/x
  3. Step 3: Cross multiply
    186,089.67x = 279,028.80 × 126,996.93
  4. Step 4: Simplify right side
    186,089.67x = 35,435,800,981.58
  5. Step 5: Solve for x
    x = 35,435,800,981.58/186,089.67
  6. Step 6: Final answer
    x = 190,423.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.