Home / 190,038.72-262,249.74-105,156.39

Finding the Fourth Proportional to 190,038.72, 262,249.74 and 105,156.39

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Solution

The fourth proportional to 190,038.72, 262,249.74 and 105,156.39 is: 145,113.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,038.72 : 262,249.74 = 105,156.39 : x
  2. Step 2: Convert to fraction form
    190,038.72/262,249.74 = 105,156.39/x
  3. Step 3: Cross multiply
    190,038.72x = 262,249.74 × 105,156.39
  4. Step 4: Simplify right side
    190,038.72x = 27,577,235,936.84
  5. Step 5: Solve for x
    x = 27,577,235,936.84/190,038.72
  6. Step 6: Final answer
    x = 145,113.77

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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.