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Finding the Fourth Proportional to 107,609.91, 148,163.64 and 91,443.12

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Solution

The fourth proportional to 107,609.91, 148,163.64 and 91,443.12 is: 125,904.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,609.91 : 148,163.64 = 91,443.12 : x
  2. Step 2: Convert to fraction form
    107,609.91/148,163.64 = 91,443.12/x
  3. Step 3: Cross multiply
    107,609.91x = 148,163.64 × 91,443.12
  4. Step 4: Simplify right side
    107,609.91x = 13,548,545,512.16
  5. Step 5: Solve for x
    x = 13,548,545,512.16/107,609.91
  6. Step 6: Final answer
    x = 125,904.25

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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.