Home / 127,579.20-191,023.20-99,931.20

Finding the Fourth Proportional to 127,579.20, 191,023.20 and 99,931.20

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Solution

The fourth proportional to 127,579.20, 191,023.20 and 99,931.20 is: 149,626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,579.20 : 191,023.20 = 99,931.20 : x
  2. Step 2: Convert to fraction form
    127,579.20/191,023.20 = 99,931.20/x
  3. Step 3: Cross multiply
    127,579.20x = 191,023.20 × 99,931.20
  4. Step 4: Simplify right side
    127,579.20x = 19,089,177,603.84
  5. Step 5: Solve for x
    x = 19,089,177,603.84/127,579.20
  6. Step 6: Final answer
    x = 149,626.10

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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.