Home / 120,544.20-180,709.79-45,612.32

Finding the Fourth Proportional to 120,544.20, 180,709.79 and 45,612.32

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Solution

The fourth proportional to 120,544.20, 180,709.79 and 45,612.32 is: 68,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,544.20 : 180,709.79 = 45,612.32 : x
  2. Step 2: Convert to fraction form
    120,544.20/180,709.79 = 45,612.32/x
  3. Step 3: Cross multiply
    120,544.20x = 180,709.79 × 45,612.32
  4. Step 4: Simplify right side
    120,544.20x = 8,242,591,637.00
  5. Step 5: Solve for x
    x = 8,242,591,637.00/120,544.20
  6. Step 6: Final answer
    x = 68,378.17

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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.