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Finding the Fourth Proportional to 170,137.30, 255,315.30 and 99,059.80

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Solution

The fourth proportional to 170,137.30, 255,315.30 and 99,059.80 is: 148,653.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,137.30 : 255,315.30 = 99,059.80 : x
  2. Step 2: Convert to fraction form
    170,137.30/255,315.30 = 99,059.80/x
  3. Step 3: Cross multiply
    170,137.30x = 255,315.30 × 99,059.80
  4. Step 4: Simplify right side
    170,137.30x = 25,291,482,554.94
  5. Step 5: Solve for x
    x = 25,291,482,554.94/170,137.30
  6. Step 6: Final answer
    x = 148,653.37

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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.