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Finding the Fourth Proportional to 170,090.70, 255,026.70 and 70,290.60

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Solution

The fourth proportional to 170,090.70, 255,026.70 and 70,290.60 is: 105,390.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,090.70 : 255,026.70 = 70,290.60 : x
  2. Step 2: Convert to fraction form
    170,090.70/255,026.70 = 70,290.60/x
  3. Step 3: Cross multiply
    170,090.70x = 255,026.70 × 70,290.60
  4. Step 4: Simplify right side
    170,090.70x = 17,925,979,759.02
  5. Step 5: Solve for x
    x = 17,925,979,759.02/170,090.70
  6. Step 6: Final answer
    x = 105,390.71

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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.