Home / 190,420.72-262,780.80-105,537.85

Finding the Fourth Proportional to 190,420.72, 262,780.80 and 105,537.85

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Solution

The fourth proportional to 190,420.72, 262,780.80 and 105,537.85 is: 145,642.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,420.72 : 262,780.80 = 105,537.85 : x
  2. Step 2: Convert to fraction form
    190,420.72/262,780.80 = 105,537.85/x
  3. Step 3: Cross multiply
    190,420.72x = 262,780.80 × 105,537.85
  4. Step 4: Simplify right side
    190,420.72x = 27,733,320,653.28
  5. Step 5: Solve for x
    x = 27,733,320,653.28/190,420.72
  6. Step 6: Final answer
    x = 145,642.35

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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.