Home / 189,411.68-261,389.67-103,371.36

Finding the Fourth Proportional to 189,411.68, 261,389.67 and 103,371.36

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Solution

The fourth proportional to 189,411.68, 261,389.67 and 103,371.36 is: 142,653.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,411.68 : 261,389.67 = 103,371.36 : x
  2. Step 2: Convert to fraction form
    189,411.68/261,389.67 = 103,371.36/x
  3. Step 3: Cross multiply
    189,411.68x = 261,389.67 × 103,371.36
  4. Step 4: Simplify right side
    189,411.68x = 27,020,205,677.85
  5. Step 5: Solve for x
    x = 27,020,205,677.85/189,411.68
  6. Step 6: Final answer
    x = 142,653.32

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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.