Home / 111,669.06-154,085.90-66,345.86

Finding the Fourth Proportional to 111,669.06, 154,085.90 and 66,345.86

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Solution

The fourth proportional to 111,669.06, 154,085.90 and 66,345.86 is: 91,546.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,669.06 : 154,085.90 = 66,345.86 : x
  2. Step 2: Convert to fraction form
    111,669.06/154,085.90 = 66,345.86/x
  3. Step 3: Cross multiply
    111,669.06x = 154,085.90 × 66,345.86
  4. Step 4: Simplify right side
    111,669.06x = 10,222,961,549.37
  5. Step 5: Solve for x
    x = 10,222,961,549.37/111,669.06
  6. Step 6: Final answer
    x = 91,546.95

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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.