Home / 127,959.50-191,783.60-90,530.36

Finding the Fourth Proportional to 127,959.50, 191,783.60 and 90,530.36

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Solution

The fourth proportional to 127,959.50, 191,783.60 and 90,530.36 is: 135,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,959.50 : 191,783.60 = 90,530.36 : x
  2. Step 2: Convert to fraction form
    127,959.50/191,783.60 = 90,530.36/x
  3. Step 3: Cross multiply
    127,959.50x = 191,783.60 × 90,530.36
  4. Step 4: Simplify right side
    127,959.50x = 17,362,238,350.10
  5. Step 5: Solve for x
    x = 17,362,238,350.10/127,959.50
  6. Step 6: Final answer
    x = 135,685.42

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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.