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Finding the Fourth Proportional to 127,609.70, 191,200.71 and 90,107.51

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Solution

The fourth proportional to 127,609.70, 191,200.71 and 90,107.51 is: 135,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,609.70 : 191,200.71 = 90,107.51 : x
  2. Step 2: Convert to fraction form
    127,609.70/191,200.71 = 90,107.51/x
  3. Step 3: Cross multiply
    127,609.70x = 191,200.71 × 90,107.51
  4. Step 4: Simplify right side
    127,609.70x = 17,228,619,888.33
  5. Step 5: Solve for x
    x = 17,228,619,888.33/127,609.70
  6. Step 6: Final answer
    x = 135,010.27

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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.