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Finding the Fourth Proportional to 107,339.63, 161,034.75 and 105,554.52

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Solution

The fourth proportional to 107,339.63, 161,034.75 and 105,554.52 is: 158,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,339.63 : 161,034.75 = 105,554.52 : x
  2. Step 2: Convert to fraction form
    107,339.63/161,034.75 = 105,554.52/x
  3. Step 3: Cross multiply
    107,339.63x = 161,034.75 × 105,554.52
  4. Step 4: Simplify right side
    107,339.63x = 16,997,945,739.57
  5. Step 5: Solve for x
    x = 16,997,945,739.57/107,339.63
  6. Step 6: Final answer
    x = 158,356.67

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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.