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Finding the Fourth Proportional to 107,757.45, 148,664.39 and 65,300.49

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Solution

The fourth proportional to 107,757.45, 148,664.39 and 65,300.49 is: 90,089.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,757.45 : 148,664.39 = 65,300.49 : x
  2. Step 2: Convert to fraction form
    107,757.45/148,664.39 = 65,300.49/x
  3. Step 3: Cross multiply
    107,757.45x = 148,664.39 × 65,300.49
  4. Step 4: Simplify right side
    107,757.45x = 9,707,857,186.05
  5. Step 5: Solve for x
    x = 9,707,857,186.05/107,757.45
  6. Step 6: Final answer
    x = 90,089.89

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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.