Home / 119,749.76-165,262-66,034.56

Finding the Fourth Proportional to 119,749.76, 165,262 and 66,034.56

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Solution

The fourth proportional to 119,749.76, 165,262 and 66,034.56 is: 91,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,749.76 : 165,262 = 66,034.56 : x
  2. Step 2: Convert to fraction form
    119,749.76/165,262 = 66,034.56/x
  3. Step 3: Cross multiply
    119,749.76x = 165,262 × 66,034.56
  4. Step 4: Simplify right side
    119,749.76x = 10,913,003,454.72
  5. Step 5: Solve for x
    x = 10,913,003,454.72/119,749.76
  6. Step 6: Final answer
    x = 91,131.74

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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.