Home / 215,980.46-298,016.12-125,315.64

Finding the Fourth Proportional to 215,980.46, 298,016.12 and 125,315.64

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Solution

The fourth proportional to 215,980.46, 298,016.12 and 125,315.64 is: 172,914.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,980.46 : 298,016.12 = 125,315.64 : x
  2. Step 2: Convert to fraction form
    215,980.46/298,016.12 = 125,315.64/x
  3. Step 3: Cross multiply
    215,980.46x = 298,016.12 × 125,315.64
  4. Step 4: Simplify right side
    215,980.46x = 37,346,081,121.41
  5. Step 5: Solve for x
    x = 37,346,081,121.41/215,980.46
  6. Step 6: Final answer
    x = 172,914.17

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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.