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Finding the Fourth Proportional to 111,670.89, 154,118.93 and 66,349.24

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Solution

The fourth proportional to 111,670.89, 154,118.93 and 66,349.24 is: 91,569.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,670.89 : 154,118.93 = 66,349.24 : x
  2. Step 2: Convert to fraction form
    111,670.89/154,118.93 = 66,349.24/x
  3. Step 3: Cross multiply
    111,670.89x = 154,118.93 × 66,349.24
  4. Step 4: Simplify right side
    111,670.89x = 10,225,673,158.07
  5. Step 5: Solve for x
    x = 10,225,673,158.07/111,670.89
  6. Step 6: Final answer
    x = 91,569.73

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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.