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Finding the Fourth Proportional to 170,837.48, 256,256.70 and 100,620.20

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Solution

The fourth proportional to 170,837.48, 256,256.70 and 100,620.20 is: 150,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,837.48 : 256,256.70 = 100,620.20 : x
  2. Step 2: Convert to fraction form
    170,837.48/256,256.70 = 100,620.20/x
  3. Step 3: Cross multiply
    170,837.48x = 256,256.70 × 100,620.20
  4. Step 4: Simplify right side
    170,837.48x = 25,784,600,405.34
  5. Step 5: Solve for x
    x = 25,784,600,405.34/170,837.48
  6. Step 6: Final answer
    x = 150,930.58

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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.