Home / 128,185.77-192,281.76-39,440.01

Finding the Fourth Proportional to 128,185.77, 192,281.76 and 39,440.01

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Solution

The fourth proportional to 128,185.77, 192,281.76 and 39,440.01 is: 59,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.77 : 192,281.76 = 39,440.01 : x
  2. Step 2: Convert to fraction form
    128,185.77/192,281.76 = 39,440.01/x
  3. Step 3: Cross multiply
    128,185.77x = 192,281.76 × 39,440.01
  4. Step 4: Simplify right side
    128,185.77x = 7,583,594,537.22
  5. Step 5: Solve for x
    x = 7,583,594,537.22/128,185.77
  6. Step 6: Final answer
    x = 59,160.97

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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.