Home / 107,701.72-161,200.40-79,231.06

Finding the Fourth Proportional to 107,701.72, 161,200.40 and 79,231.06

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Solution

The fourth proportional to 107,701.72, 161,200.40 and 79,231.06 is: 118,587.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,701.72 : 161,200.40 = 79,231.06 : x
  2. Step 2: Convert to fraction form
    107,701.72/161,200.40 = 79,231.06/x
  3. Step 3: Cross multiply
    107,701.72x = 161,200.40 × 79,231.06
  4. Step 4: Simplify right side
    107,701.72x = 12,772,078,369.77
  5. Step 5: Solve for x
    x = 12,772,078,369.77/107,701.72
  6. Step 6: Final answer
    x = 118,587.51

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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.