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Finding the Fourth Proportional to 170,117.86, 255,213.69 and 51,786.13

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Solution

The fourth proportional to 170,117.86, 255,213.69 and 51,786.13 is: 77,690.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,117.86 : 255,213.69 = 51,786.13 : x
  2. Step 2: Convert to fraction form
    170,117.86/255,213.69 = 51,786.13/x
  3. Step 3: Cross multiply
    170,117.86x = 255,213.69 × 51,786.13
  4. Step 4: Simplify right side
    170,117.86x = 13,216,529,328.12
  5. Step 5: Solve for x
    x = 13,216,529,328.12/170,117.86
  6. Step 6: Final answer
    x = 77,690.43

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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.