Home / 111,121.90-166,682.85-103,686.10

Finding the Fourth Proportional to 111,121.90, 166,682.85 and 103,686.10

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Solution

The fourth proportional to 111,121.90, 166,682.85 and 103,686.10 is: 155,529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,121.90 : 166,682.85 = 103,686.10 : x
  2. Step 2: Convert to fraction form
    111,121.90/166,682.85 = 103,686.10/x
  3. Step 3: Cross multiply
    111,121.90x = 166,682.85 × 103,686.10
  4. Step 4: Simplify right side
    111,121.90x = 17,282,694,653.39
  5. Step 5: Solve for x
    x = 17,282,694,653.39/111,121.90
  6. Step 6: Final answer
    x = 155,529.15

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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.