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Finding the Fourth Proportional to 107,615.20, 161,422.80 and 28,741.60

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Solution

The fourth proportional to 107,615.20, 161,422.80 and 28,741.60 is: 43,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,615.20 : 161,422.80 = 28,741.60 : x
  2. Step 2: Convert to fraction form
    107,615.20/161,422.80 = 28,741.60/x
  3. Step 3: Cross multiply
    107,615.20x = 161,422.80 × 28,741.60
  4. Step 4: Simplify right side
    107,615.20x = 4,639,549,548.48
  5. Step 5: Solve for x
    x = 4,639,549,548.48/107,615.20
  6. Step 6: Final answer
    x = 43,112.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.