Home / 128,898.98-193,334.14-40,145.06

Finding the Fourth Proportional to 128,898.98, 193,334.14 and 40,145.06

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Solution

The fourth proportional to 128,898.98, 193,334.14 and 40,145.06 is: 60,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,898.98 : 193,334.14 = 40,145.06 : x
  2. Step 2: Convert to fraction form
    128,898.98/193,334.14 = 40,145.06/x
  3. Step 3: Cross multiply
    128,898.98x = 193,334.14 × 40,145.06
  4. Step 4: Simplify right side
    128,898.98x = 7,761,410,650.35
  5. Step 5: Solve for x
    x = 7,761,410,650.35/128,898.98
  6. Step 6: Final answer
    x = 60,213.13

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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.