Home / 127,616.80-191,206.42-90,109.76

Finding the Fourth Proportional to 127,616.80, 191,206.42 and 90,109.76

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Solution

The fourth proportional to 127,616.80, 191,206.42 and 90,109.76 is: 135,010.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,616.80 : 191,206.42 = 90,109.76 : x
  2. Step 2: Convert to fraction form
    127,616.80/191,206.42 = 90,109.76/x
  3. Step 3: Cross multiply
    127,616.80x = 191,206.42 × 90,109.76
  4. Step 4: Simplify right side
    127,616.80x = 17,229,564,616.66
  5. Step 5: Solve for x
    x = 17,229,564,616.66/127,616.80
  6. Step 6: Final answer
    x = 135,010.16

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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.