Home / 190,312.92-262,610.64-105,408.72

Finding the Fourth Proportional to 190,312.92, 262,610.64 and 105,408.72

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Solution

The fourth proportional to 190,312.92, 262,610.64 and 105,408.72 is: 145,452.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,312.92 : 262,610.64 = 105,408.72 : x
  2. Step 2: Convert to fraction form
    190,312.92/262,610.64 = 105,408.72/x
  3. Step 3: Cross multiply
    190,312.92x = 262,610.64 × 105,408.72
  4. Step 4: Simplify right side
    190,312.92x = 27,681,451,420.78
  5. Step 5: Solve for x
    x = 27,681,451,420.78/190,312.92
  6. Step 6: Final answer
    x = 145,452.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.