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Finding the Fourth Proportional to 170,334.36, 255,501.54 and 76,866.84

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Solution

The fourth proportional to 170,334.36, 255,501.54 and 76,866.84 is: 115,300.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,334.36 : 255,501.54 = 76,866.84 : x
  2. Step 2: Convert to fraction form
    170,334.36/255,501.54 = 76,866.84/x
  3. Step 3: Cross multiply
    170,334.36x = 255,501.54 × 76,866.84
  4. Step 4: Simplify right side
    170,334.36x = 19,639,595,994.93
  5. Step 5: Solve for x
    x = 19,639,595,994.93/170,334.36
  6. Step 6: Final answer
    x = 115,300.26

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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.