Home / 107,139.28-147,802.44-66,826.96

Finding the Fourth Proportional to 107,139.28, 147,802.44 and 66,826.96

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Solution

The fourth proportional to 107,139.28, 147,802.44 and 66,826.96 is: 92,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,139.28 : 147,802.44 = 66,826.96 : x
  2. Step 2: Convert to fraction form
    107,139.28/147,802.44 = 66,826.96/x
  3. Step 3: Cross multiply
    107,139.28x = 147,802.44 × 66,826.96
  4. Step 4: Simplify right side
    107,139.28x = 9,877,187,745.78
  5. Step 5: Solve for x
    x = 9,877,187,745.78/107,139.28
  6. Step 6: Final answer
    x = 92,190.16

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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.