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Finding the Fourth Proportional to 192,602.48, 288,939.88 and 87,428.84

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Solution

The fourth proportional to 192,602.48, 288,939.88 and 87,428.84 is: 131,159.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,602.48 : 288,939.88 = 87,428.84 : x
  2. Step 2: Convert to fraction form
    192,602.48/288,939.88 = 87,428.84/x
  3. Step 3: Cross multiply
    192,602.48x = 288,939.88 × 87,428.84
  4. Step 4: Simplify right side
    192,602.48x = 25,261,678,538.14
  5. Step 5: Solve for x
    x = 25,261,678,538.14/192,602.48
  6. Step 6: Final answer
    x = 131,159.67

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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.