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Finding the Fourth Proportional to 146,704, 220,056 and 81,040

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Solution

The fourth proportional to 146,704, 220,056 and 81,040 is: 121,560

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,704 : 220,056 = 81,040 : x
  2. Step 2: Convert to fraction form
    146,704/220,056 = 81,040/x
  3. Step 3: Cross multiply
    146,704x = 220,056 × 81,040
  4. Step 4: Simplify right side
    146,704x = 17,833,338,240
  5. Step 5: Solve for x
    x = 17,833,338,240/146,704
  6. Step 6: Final answer
    x = 121,560

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.