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Finding the Fourth Proportional to 148,147.68, 204,448.68 and 81,079.68

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Solution

The fourth proportional to 148,147.68, 204,448.68 and 81,079.68 is: 111,892.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,147.68 : 204,448.68 = 81,079.68 : x
  2. Step 2: Convert to fraction form
    148,147.68/204,448.68 = 81,079.68/x
  3. Step 3: Cross multiply
    148,147.68x = 204,448.68 × 81,079.68
  4. Step 4: Simplify right side
    148,147.68x = 16,576,633,550.82
  5. Step 5: Solve for x
    x = 16,576,633,550.82/148,147.68
  6. Step 6: Final answer
    x = 111,892.63

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1.5x scale

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.