Home / 127,611.20-191,202.96-90,109.01

Finding the Fourth Proportional to 127,611.20, 191,202.96 and 90,109.01

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Solution

The fourth proportional to 127,611.20, 191,202.96 and 90,109.01 is: 135,012.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,611.20 : 191,202.96 = 90,109.01 : x
  2. Step 2: Convert to fraction form
    127,611.20/191,202.96 = 90,109.01/x
  3. Step 3: Cross multiply
    127,611.20x = 191,202.96 × 90,109.01
  4. Step 4: Simplify right side
    127,611.20x = 17,229,109,434.67
  5. Step 5: Solve for x
    x = 17,229,109,434.67/127,611.20
  6. Step 6: Final answer
    x = 135,012.52

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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.