Home / 128,025.54-191,666.43-74,554.50

Finding the Fourth Proportional to 128,025.54, 191,666.43 and 74,554.50

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Solution

The fourth proportional to 128,025.54, 191,666.43 and 74,554.50 is: 111,615.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,025.54 : 191,666.43 = 74,554.50 : x
  2. Step 2: Convert to fraction form
    128,025.54/191,666.43 = 74,554.50/x
  3. Step 3: Cross multiply
    128,025.54x = 191,666.43 × 74,554.50
  4. Step 4: Simplify right side
    128,025.54x = 14,289,594,855.44
  5. Step 5: Solve for x
    x = 14,289,594,855.44/128,025.54
  6. Step 6: Final answer
    x = 111,615.19

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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.