Home / 107,896.28-162,112.10-69,969.68

Finding the Fourth Proportional to 107,896.28, 162,112.10 and 69,969.68

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Solution

The fourth proportional to 107,896.28, 162,112.10 and 69,969.68 is: 105,128.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,896.28 : 162,112.10 = 69,969.68 : x
  2. Step 2: Convert to fraction form
    107,896.28/162,112.10 = 69,969.68/x
  3. Step 3: Cross multiply
    107,896.28x = 162,112.10 × 69,969.68
  4. Step 4: Simplify right side
    107,896.28x = 11,342,931,761.13
  5. Step 5: Solve for x
    x = 11,342,931,761.13/107,896.28
  6. Step 6: Final answer
    x = 105,128.11

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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.