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Finding the Fourth Proportional to 111,989.48, 154,534.23 and 68,962.07

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Solution

The fourth proportional to 111,989.48, 154,534.23 and 68,962.07 is: 95,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,989.48 : 154,534.23 = 68,962.07 : x
  2. Step 2: Convert to fraction form
    111,989.48/154,534.23 = 68,962.07/x
  3. Step 3: Cross multiply
    111,989.48x = 154,534.23 × 68,962.07
  4. Step 4: Simplify right side
    111,989.48x = 10,656,999,613.99
  5. Step 5: Solve for x
    x = 10,656,999,613.99/111,989.48
  6. Step 6: Final answer
    x = 95,160.72

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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.