Home / 170,650.86-235,562.76-128,331.60

Finding the Fourth Proportional to 170,650.86, 235,562.76 and 128,331.60

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Solution

The fourth proportional to 170,650.86, 235,562.76 and 128,331.60 is: 177,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,650.86 : 235,562.76 = 128,331.60 : x
  2. Step 2: Convert to fraction form
    170,650.86/235,562.76 = 128,331.60/x
  3. Step 3: Cross multiply
    170,650.86x = 235,562.76 × 128,331.60
  4. Step 4: Simplify right side
    170,650.86x = 30,230,145,891.22
  5. Step 5: Solve for x
    x = 30,230,145,891.22/170,650.86
  6. Step 6: Final answer
    x = 177,146.17

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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.