Home / 128,836.02-193,309.10-66,550.26

Finding the Fourth Proportional to 128,836.02, 193,309.10 and 66,550.26

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Solution

The fourth proportional to 128,836.02, 193,309.10 and 66,550.26 is: 99,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,836.02 : 193,309.10 = 66,550.26 : x
  2. Step 2: Convert to fraction form
    128,836.02/193,309.10 = 66,550.26/x
  3. Step 3: Cross multiply
    128,836.02x = 193,309.10 × 66,550.26
  4. Step 4: Simplify right side
    128,836.02x = 12,864,770,865.37
  5. Step 5: Solve for x
    x = 12,864,770,865.37/128,836.02
  6. Step 6: Final answer
    x = 99,853.84

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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.