Home / 117,428.48-162,030.72-66,440.96

Finding the Fourth Proportional to 117,428.48, 162,030.72 and 66,440.96

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Solution

The fourth proportional to 117,428.48, 162,030.72 and 66,440.96 is: 91,676.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,428.48 : 162,030.72 = 66,440.96 : x
  2. Step 2: Convert to fraction form
    117,428.48/162,030.72 = 66,440.96/x
  3. Step 3: Cross multiply
    117,428.48x = 162,030.72 × 66,440.96
  4. Step 4: Simplify right side
    117,428.48x = 10,765,476,586.29
  5. Step 5: Solve for x
    x = 10,765,476,586.29/117,428.48
  6. Step 6: Final answer
    x = 91,676.88

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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.