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Finding the Fourth Proportional to 113,422.80, 170,134.20 and 30,316.80

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Solution

The fourth proportional to 113,422.80, 170,134.20 and 30,316.80 is: 45,475.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,422.80 : 170,134.20 = 30,316.80 : x
  2. Step 2: Convert to fraction form
    113,422.80/170,134.20 = 30,316.80/x
  3. Step 3: Cross multiply
    113,422.80x = 170,134.20 × 30,316.80
  4. Step 4: Simplify right side
    113,422.80x = 5,157,924,514.56
  5. Step 5: Solve for x
    x = 5,157,924,514.56/113,422.80
  6. Step 6: Final answer
    x = 45,475.20

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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.