Home / 170,669.92-235,588.98-128,350.60

Finding the Fourth Proportional to 170,669.92, 235,588.98 and 128,350.60

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Solution

The fourth proportional to 170,669.92, 235,588.98 and 128,350.60 is: 177,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,669.92 : 235,588.98 = 128,350.60 : x
  2. Step 2: Convert to fraction form
    170,669.92/235,588.98 = 128,350.60/x
  3. Step 3: Cross multiply
    170,669.92x = 235,588.98 × 128,350.60
  4. Step 4: Simplify right side
    170,669.92x = 30,237,986,936.39
  5. Step 5: Solve for x
    x = 30,237,986,936.39/170,669.92
  6. Step 6: Final answer
    x = 177,172.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.