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Finding the Fourth Proportional to 111,029, 153,220.02 and 60,728

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Solution

The fourth proportional to 111,029, 153,220.02 and 60,728 is: 83,804.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,029 : 153,220.02 = 60,728 : x
  2. Step 2: Convert to fraction form
    111,029/153,220.02 = 60,728/x
  3. Step 3: Cross multiply
    111,029x = 153,220.02 × 60,728
  4. Step 4: Simplify right side
    111,029x = 9,304,745,374.56
  5. Step 5: Solve for x
    x = 9,304,745,374.56/111,029
  6. Step 6: Final answer
    x = 83,804.64

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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.