Home / 111,986.64-154,497.24-77,986.08

Finding the Fourth Proportional to 111,986.64, 154,497.24 and 77,986.08

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Solution

The fourth proportional to 111,986.64, 154,497.24 and 77,986.08 is: 107,589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,986.64 : 154,497.24 = 77,986.08 : x
  2. Step 2: Convert to fraction form
    111,986.64/154,497.24 = 77,986.08/x
  3. Step 3: Cross multiply
    111,986.64x = 154,497.24 × 77,986.08
  4. Step 4: Simplify right side
    111,986.64x = 12,048,634,118.42
  5. Step 5: Solve for x
    x = 12,048,634,118.42/111,986.64
  6. Step 6: Final answer
    x = 107,589.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.