Home / 189,411.54-261,384.09-103,372.22

Finding the Fourth Proportional to 189,411.54, 261,384.09 and 103,372.22

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Solution

The fourth proportional to 189,411.54, 261,384.09 and 103,372.22 is: 142,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,411.54 : 261,384.09 = 103,372.22 : x
  2. Step 2: Convert to fraction form
    189,411.54/261,384.09 = 103,372.22/x
  3. Step 3: Cross multiply
    189,411.54x = 261,384.09 × 103,372.22
  4. Step 4: Simplify right side
    189,411.54x = 27,019,853,655.98
  5. Step 5: Solve for x
    x = 27,019,853,655.98/189,411.54
  6. Step 6: Final answer
    x = 142,651.57

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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.