Home / 128,756.67-193,135.10-40,010.24

Finding the Fourth Proportional to 128,756.67, 193,135.10 and 40,010.24

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Solution

The fourth proportional to 128,756.67, 193,135.10 and 40,010.24 is: 60,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,756.67 : 193,135.10 = 40,010.24 : x
  2. Step 2: Convert to fraction form
    128,756.67/193,135.10 = 40,010.24/x
  3. Step 3: Cross multiply
    128,756.67x = 193,135.10 × 40,010.24
  4. Step 4: Simplify right side
    128,756.67x = 7,727,380,537.70
  5. Step 5: Solve for x
    x = 7,727,380,537.70/128,756.67
  6. Step 6: Final answer
    x = 60,015.38

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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.