Home / 170,647.13-255,771.38-128,391.45

Finding the Fourth Proportional to 170,647.13, 255,771.38 and 128,391.45

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Solution

The fourth proportional to 170,647.13, 255,771.38 and 128,391.45 is: 192,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,647.13 : 255,771.38 = 128,391.45 : x
  2. Step 2: Convert to fraction form
    170,647.13/255,771.38 = 128,391.45/x
  3. Step 3: Cross multiply
    170,647.13x = 255,771.38 × 128,391.45
  4. Step 4: Simplify right side
    170,647.13x = 32,838,857,704.74
  5. Step 5: Solve for x
    x = 32,838,857,704.74/170,647.13
  6. Step 6: Final answer
    x = 192,437.22

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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.