Home / 123,771.36-185,518.80-113,807.28

Finding the Fourth Proportional to 123,771.36, 185,518.80 and 113,807.28

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Solution

The fourth proportional to 123,771.36, 185,518.80 and 113,807.28 is: 170,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,771.36 : 185,518.80 = 113,807.28 : x
  2. Step 2: Convert to fraction form
    123,771.36/185,518.80 = 113,807.28/x
  3. Step 3: Cross multiply
    123,771.36x = 185,518.80 × 113,807.28
  4. Step 4: Simplify right side
    123,771.36x = 21,113,390,016.86
  5. Step 5: Solve for x
    x = 21,113,390,016.86/123,771.36
  6. Step 6: Final answer
    x = 170,583.81

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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.