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Finding the Fourth Proportional to 170,089.70, 255,025.20 and 70,289.60

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Solution

The fourth proportional to 170,089.70, 255,025.20 and 70,289.60 is: 105,389.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,089.70 : 255,025.20 = 70,289.60 : x
  2. Step 2: Convert to fraction form
    170,089.70/255,025.20 = 70,289.60/x
  3. Step 3: Cross multiply
    170,089.70x = 255,025.20 × 70,289.60
  4. Step 4: Simplify right side
    170,089.70x = 17,925,619,297.92
  5. Step 5: Solve for x
    x = 17,925,619,297.92/170,089.70
  6. Step 6: Final answer
    x = 105,389.21

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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.