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Finding the Fourth Proportional to 170,087.70, 255,022.20 and 70,287.60

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Solution

The fourth proportional to 170,087.70, 255,022.20 and 70,287.60 is: 105,386.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,087.70 : 255,022.20 = 70,287.60 : x
  2. Step 2: Convert to fraction form
    170,087.70/255,022.20 = 70,287.60/x
  3. Step 3: Cross multiply
    170,087.70x = 255,022.20 × 70,287.60
  4. Step 4: Simplify right side
    170,087.70x = 17,924,898,384.72
  5. Step 5: Solve for x
    x = 17,924,898,384.72/170,087.70
  6. Step 6: Final answer
    x = 105,386.21

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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.