Home / 128,235.48-192,391.92-38,281.11

Finding the Fourth Proportional to 128,235.48, 192,391.92 and 38,281.11

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Solution

The fourth proportional to 128,235.48, 192,391.92 and 38,281.11 is: 57,433.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,235.48 : 192,391.92 = 38,281.11 : x
  2. Step 2: Convert to fraction form
    128,235.48/192,391.92 = 38,281.11/x
  3. Step 3: Cross multiply
    128,235.48x = 192,391.92 × 38,281.11
  4. Step 4: Simplify right side
    128,235.48x = 7,364,976,252.63
  5. Step 5: Solve for x
    x = 7,364,976,252.63/128,235.48
  6. Step 6: Final answer
    x = 57,433.22

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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.