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Finding the Fourth Proportional to 107,080.74, 147,771.09 and 69,420.42

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Solution

The fourth proportional to 107,080.74, 147,771.09 and 69,420.42 is: 95,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,080.74 : 147,771.09 = 69,420.42 : x
  2. Step 2: Convert to fraction form
    107,080.74/147,771.09 = 69,420.42/x
  3. Step 3: Cross multiply
    107,080.74x = 147,771.09 × 69,420.42
  4. Step 4: Simplify right side
    107,080.74x = 10,258,331,131.66
  5. Step 5: Solve for x
    x = 10,258,331,131.66/107,080.74
  6. Step 6: Final answer
    x = 95,799.96

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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.