Home / 128,738.17-193,074.94-61,228.55

Finding the Fourth Proportional to 128,738.17, 193,074.94 and 61,228.55

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Solution

The fourth proportional to 128,738.17, 193,074.94 and 61,228.55 is: 91,827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,738.17 : 193,074.94 = 61,228.55 : x
  2. Step 2: Convert to fraction form
    128,738.17/193,074.94 = 61,228.55/x
  3. Step 3: Cross multiply
    128,738.17x = 193,074.94 × 61,228.55
  4. Step 4: Simplify right side
    128,738.17x = 11,821,697,499.09
  5. Step 5: Solve for x
    x = 11,821,697,499.09/128,738.17
  6. Step 6: Final answer
    x = 91,827.45

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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.