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Finding the Fourth Proportional to 170,151.12, 255,362.76 and 76,664.16

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Solution

The fourth proportional to 170,151.12, 255,362.76 and 76,664.16 is: 115,057.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,151.12 : 255,362.76 = 76,664.16 : x
  2. Step 2: Convert to fraction form
    170,151.12/255,362.76 = 76,664.16/x
  3. Step 3: Cross multiply
    170,151.12x = 255,362.76 × 76,664.16
  4. Step 4: Simplify right side
    170,151.12x = 19,577,171,490.68
  5. Step 5: Solve for x
    x = 19,577,171,490.68/170,151.12
  6. Step 6: Final answer
    x = 115,057.55

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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.