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Finding the Fourth Proportional to 107,893.23, 148,912.07 and 67,641.90

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Solution

The fourth proportional to 107,893.23, 148,912.07 and 67,641.90 is: 93,357.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,893.23 : 148,912.07 = 67,641.90 : x
  2. Step 2: Convert to fraction form
    107,893.23/148,912.07 = 67,641.90/x
  3. Step 3: Cross multiply
    107,893.23x = 148,912.07 × 67,641.90
  4. Step 4: Simplify right side
    107,893.23x = 10,072,695,009.52
  5. Step 5: Solve for x
    x = 10,072,695,009.52/107,893.23
  6. Step 6: Final answer
    x = 93,357.99

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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.