Home / 130,384.64-179,778.40-120,936.80

Finding the Fourth Proportional to 130,384.64, 179,778.40 and 120,936.80

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Solution

The fourth proportional to 130,384.64, 179,778.40 and 120,936.80 is: 166,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,384.64 : 179,778.40 = 120,936.80 : x
  2. Step 2: Convert to fraction form
    130,384.64/179,778.40 = 120,936.80/x
  3. Step 3: Cross multiply
    130,384.64x = 179,778.40 × 120,936.80
  4. Step 4: Simplify right side
    130,384.64x = 21,741,824,405.12
  5. Step 5: Solve for x
    x = 21,741,824,405.12/130,384.64
  6. Step 6: Final answer
    x = 166,751.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.