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Finding the Fourth Proportional to 170,145.16, 255,029.80 and 70,250.28

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Solution

The fourth proportional to 170,145.16, 255,029.80 and 70,250.28 is: 105,297.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,145.16 : 255,029.80 = 70,250.28 : x
  2. Step 2: Convert to fraction form
    170,145.16/255,029.80 = 70,250.28/x
  3. Step 3: Cross multiply
    170,145.16x = 255,029.80 × 70,250.28
  4. Step 4: Simplify right side
    170,145.16x = 17,915,914,858.34
  5. Step 5: Solve for x
    x = 17,915,914,858.34/170,145.16
  6. Step 6: Final answer
    x = 105,297.82

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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.