Home / 189,496.80-261,539.28-113,020.56

Finding the Fourth Proportional to 189,496.80, 261,539.28 and 113,020.56

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Solution

The fourth proportional to 189,496.80, 261,539.28 and 113,020.56 is: 155,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,496.80 : 261,539.28 = 113,020.56 : x
  2. Step 2: Convert to fraction form
    189,496.80/261,539.28 = 113,020.56/x
  3. Step 3: Cross multiply
    189,496.80x = 261,539.28 × 113,020.56
  4. Step 4: Simplify right side
    189,496.80x = 29,559,315,887.60
  5. Step 5: Solve for x
    x = 29,559,315,887.60/189,496.80
  6. Step 6: Final answer
    x = 155,988.47

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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.