Home / 111,330.60-166,704.30-81,587.40

Finding the Fourth Proportional to 111,330.60, 166,704.30 and 81,587.40

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Solution

The fourth proportional to 111,330.60, 166,704.30 and 81,587.40 is: 122,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,330.60 : 166,704.30 = 81,587.40 : x
  2. Step 2: Convert to fraction form
    111,330.60/166,704.30 = 81,587.40/x
  3. Step 3: Cross multiply
    111,330.60x = 166,704.30 × 81,587.40
  4. Step 4: Simplify right side
    111,330.60x = 13,600,970,405.82
  5. Step 5: Solve for x
    x = 13,600,970,405.82/111,330.60
  6. Step 6: Final answer
    x = 122,167.40

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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.