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Finding the Fourth Proportional to 119,375.65, 164,741.07 and 65,665.36

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Solution

The fourth proportional to 119,375.65, 164,741.07 and 65,665.36 is: 90,619.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,375.65 : 164,741.07 = 65,665.36 : x
  2. Step 2: Convert to fraction form
    119,375.65/164,741.07 = 65,665.36/x
  3. Step 3: Cross multiply
    119,375.65x = 164,741.07 × 65,665.36
  4. Step 4: Simplify right side
    119,375.65x = 10,817,781,668.34
  5. Step 5: Solve for x
    x = 10,817,781,668.34/119,375.65
  6. Step 6: Final answer
    x = 90,619.67

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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.