Home / 111,045.60-166,241.16-71,485.20

Finding the Fourth Proportional to 111,045.60, 166,241.16 and 71,485.20

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Solution

The fourth proportional to 111,045.60, 166,241.16 and 71,485.20 is: 107,017.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,045.60 : 166,241.16 = 71,485.20 : x
  2. Step 2: Convert to fraction form
    111,045.60/166,241.16 = 71,485.20/x
  3. Step 3: Cross multiply
    111,045.60x = 166,241.16 × 71,485.20
  4. Step 4: Simplify right side
    111,045.60x = 11,883,782,570.83
  5. Step 5: Solve for x
    x = 11,883,782,570.83/111,045.60
  6. Step 6: Final answer
    x = 107,017.14

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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.