Home / 128,535.23-192,467.50-103,438.19

Finding the Fourth Proportional to 128,535.23, 192,467.50 and 103,438.19

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Solution

The fourth proportional to 128,535.23, 192,467.50 and 103,438.19 is: 154,887.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,535.23 : 192,467.50 = 103,438.19 : x
  2. Step 2: Convert to fraction form
    128,535.23/192,467.50 = 103,438.19/x
  3. Step 3: Cross multiply
    128,535.23x = 192,467.50 × 103,438.19
  4. Step 4: Simplify right side
    128,535.23x = 19,908,489,833.83
  5. Step 5: Solve for x
    x = 19,908,489,833.83/128,535.23
  6. Step 6: Final answer
    x = 154,887.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.