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Finding the Fourth Proportional to 170,879.20, 256,529.40 and 107,699.20

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Solution

The fourth proportional to 170,879.20, 256,529.40 and 107,699.20 is: 161,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,879.20 : 256,529.40 = 107,699.20 : x
  2. Step 2: Convert to fraction form
    170,879.20/256,529.40 = 107,699.20/x
  3. Step 3: Cross multiply
    170,879.20x = 256,529.40 × 107,699.20
  4. Step 4: Simplify right side
    170,879.20x = 27,628,011,156.48
  5. Step 5: Solve for x
    x = 27,628,011,156.48/170,879.20
  6. Step 6: Final answer
    x = 161,681.53

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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.