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Finding the Fourth Proportional to 170,115.63, 255,210.32 and 51,783.87

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Solution

The fourth proportional to 170,115.63, 255,210.32 and 51,783.87 is: 77,687.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,115.63 : 255,210.32 = 51,783.87 : x
  2. Step 2: Convert to fraction form
    170,115.63/255,210.32 = 51,783.87/x
  3. Step 3: Cross multiply
    170,115.63x = 255,210.32 × 51,783.87
  4. Step 4: Simplify right side
    170,115.63x = 13,215,778,033.54
  5. Step 5: Solve for x
    x = 13,215,778,033.54/170,115.63
  6. Step 6: Final answer
    x = 77,687.03

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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.