Home / 128,264.69-177,054.77-114,812.21

Finding the Fourth Proportional to 128,264.69, 177,054.77 and 114,812.21

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Solution

The fourth proportional to 128,264.69, 177,054.77 and 114,812.21 is: 158,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,264.69 : 177,054.77 = 114,812.21 : x
  2. Step 2: Convert to fraction form
    128,264.69/177,054.77 = 114,812.21/x
  3. Step 3: Cross multiply
    128,264.69x = 177,054.77 × 114,812.21
  4. Step 4: Simplify right side
    128,264.69x = 20,328,048,860.68
  5. Step 5: Solve for x
    x = 20,328,048,860.68/128,264.69
  6. Step 6: Final answer
    x = 158,485.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.