Home / 127,206.88-190,790.16-76,633.36

Finding the Fourth Proportional to 127,206.88, 190,790.16 and 76,633.36

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Solution

The fourth proportional to 127,206.88, 190,790.16 and 76,633.36 is: 114,937.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,206.88 : 190,790.16 = 76,633.36 : x
  2. Step 2: Convert to fraction form
    127,206.88/190,790.16 = 76,633.36/x
  3. Step 3: Cross multiply
    127,206.88x = 190,790.16 × 76,633.36
  4. Step 4: Simplify right side
    127,206.88x = 14,620,891,015.74
  5. Step 5: Solve for x
    x = 14,620,891,015.74/127,206.88
  6. Step 6: Final answer
    x = 114,937.89

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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.