Home / 128,456.76-192,435.80-94,661.45

Finding the Fourth Proportional to 128,456.76, 192,435.80 and 94,661.45

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Solution

The fourth proportional to 128,456.76, 192,435.80 and 94,661.45 is: 141,808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,456.76 : 192,435.80 = 94,661.45 : x
  2. Step 2: Convert to fraction form
    128,456.76/192,435.80 = 94,661.45/x
  3. Step 3: Cross multiply
    128,456.76x = 192,435.80 × 94,661.45
  4. Step 4: Simplify right side
    128,456.76x = 18,216,250,424.42
  5. Step 5: Solve for x
    x = 18,216,250,424.42/128,456.76
  6. Step 6: Final answer
    x = 141,808.42

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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.