Home / 218,619.80-327,929.70-130,146.20

Finding the Fourth Proportional to 218,619.80, 327,929.70 and 130,146.20

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Solution

The fourth proportional to 218,619.80, 327,929.70 and 130,146.20 is: 195,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,619.80 : 327,929.70 = 130,146.20 : x
  2. Step 2: Convert to fraction form
    218,619.80/327,929.70 = 130,146.20/x
  3. Step 3: Cross multiply
    218,619.80x = 327,929.70 × 130,146.20
  4. Step 4: Simplify right side
    218,619.80x = 42,678,804,322.14
  5. Step 5: Solve for x
    x = 42,678,804,322.14/218,619.80
  6. Step 6: Final answer
    x = 195,219.30

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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.