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Finding the Fourth Proportional to 107,693.43, 148,662.88 and 76,668.67

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Solution

The fourth proportional to 107,693.43, 148,662.88 and 76,668.67 is: 105,835.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,693.43 : 148,662.88 = 76,668.67 : x
  2. Step 2: Convert to fraction form
    107,693.43/148,662.88 = 76,668.67/x
  3. Step 3: Cross multiply
    107,693.43x = 148,662.88 × 76,668.67
  4. Step 4: Simplify right side
    107,693.43x = 11,397,785,282.13
  5. Step 5: Solve for x
    x = 11,397,785,282.13/107,693.43
  6. Step 6: Final answer
    x = 105,835.48

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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.