Home / 127,588.51-176,091.50-76,629.38

Finding the Fourth Proportional to 127,588.51, 176,091.50 and 76,629.38

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Solution

The fourth proportional to 127,588.51, 176,091.50 and 76,629.38 is: 105,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,588.51 : 176,091.50 = 76,629.38 : x
  2. Step 2: Convert to fraction form
    127,588.51/176,091.50 = 76,629.38/x
  3. Step 3: Cross multiply
    127,588.51x = 176,091.50 × 76,629.38
  4. Step 4: Simplify right side
    127,588.51x = 13,493,782,085.12
  5. Step 5: Solve for x
    x = 13,493,782,085.12/127,588.51
  6. Step 6: Final answer
    x = 105,760.17

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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.