Home / 107,827.20-161,886.60-68,461.20

Finding the Fourth Proportional to 107,827.20, 161,886.60 and 68,461.20

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Solution

The fourth proportional to 107,827.20, 161,886.60 and 68,461.20 is: 102,784.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,827.20 : 161,886.60 = 68,461.20 : x
  2. Step 2: Convert to fraction form
    107,827.20/161,886.60 = 68,461.20/x
  3. Step 3: Cross multiply
    107,827.20x = 161,886.60 × 68,461.20
  4. Step 4: Simplify right side
    107,827.20x = 11,082,950,899.92
  5. Step 5: Solve for x
    x = 11,082,950,899.92/107,827.20
  6. Step 6: Final answer
    x = 102,784.37

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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.