Home / 190,310.72-262,644.80-105,435.68

Finding the Fourth Proportional to 190,310.72, 262,644.80 and 105,435.68

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Solution

The fourth proportional to 190,310.72, 262,644.80 and 105,435.68 is: 145,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,310.72 : 262,644.80 = 105,435.68 : x
  2. Step 2: Convert to fraction form
    190,310.72/262,644.80 = 105,435.68/x
  3. Step 3: Cross multiply
    190,310.72x = 262,644.80 × 105,435.68
  4. Step 4: Simplify right side
    190,310.72x = 27,692,131,246.06
  5. Step 5: Solve for x
    x = 27,692,131,246.06/190,310.72
  6. Step 6: Final answer
    x = 145,510.10

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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.