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Finding the Fourth Proportional to 107,285.38, 148,019.61 and 61,957.38

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Solution

The fourth proportional to 107,285.38, 148,019.61 and 61,957.38 is: 85,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,285.38 : 148,019.61 = 61,957.38 : x
  2. Step 2: Convert to fraction form
    107,285.38/148,019.61 = 61,957.38/x
  3. Step 3: Cross multiply
    107,285.38x = 148,019.61 × 61,957.38
  4. Step 4: Simplify right side
    107,285.38x = 9,170,907,224.22
  5. Step 5: Solve for x
    x = 9,170,907,224.22/107,285.38
  6. Step 6: Final answer
    x = 85,481.43

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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.