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Finding the Fourth Proportional to 170,397.05, 255,422.41 and 70,611.53

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Solution

The fourth proportional to 170,397.05, 255,422.41 and 70,611.53 is: 105,845.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,397.05 : 255,422.41 = 70,611.53 : x
  2. Step 2: Convert to fraction form
    170,397.05/255,422.41 = 70,611.53/x
  3. Step 3: Cross multiply
    170,397.05x = 255,422.41 × 70,611.53
  4. Step 4: Simplify right side
    170,397.05x = 18,035,765,712.75
  5. Step 5: Solve for x
    x = 18,035,765,712.75/170,397.05
  6. Step 6: Final answer
    x = 105,845.53

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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.