Home / 128,839.02-193,313.60-66,553.26

Finding the Fourth Proportional to 128,839.02, 193,313.60 and 66,553.26

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Solution

The fourth proportional to 128,839.02, 193,313.60 and 66,553.26 is: 99,858.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,839.02 : 193,313.60 = 66,553.26 : x
  2. Step 2: Convert to fraction form
    128,839.02/193,313.60 = 66,553.26/x
  3. Step 3: Cross multiply
    128,839.02x = 193,313.60 × 66,553.26
  4. Step 4: Simplify right side
    128,839.02x = 12,865,650,282.34
  5. Step 5: Solve for x
    x = 12,865,650,282.34/128,839.02
  6. Step 6: Final answer
    x = 99,858.34

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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.