Home / 190,189.12-262,475.76-105,314.08

Finding the Fourth Proportional to 190,189.12, 262,475.76 and 105,314.08

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Solution

The fourth proportional to 190,189.12, 262,475.76 and 105,314.08 is: 145,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,189.12 : 262,475.76 = 105,314.08 : x
  2. Step 2: Convert to fraction form
    190,189.12/262,475.76 = 105,314.08/x
  3. Step 3: Cross multiply
    190,189.12x = 262,475.76 × 105,314.08
  4. Step 4: Simplify right side
    190,189.12x = 27,642,393,186.70
  5. Step 5: Solve for x
    x = 27,642,393,186.70/190,189.12
  6. Step 6: Final answer
    x = 145,341.61

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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.