Home / 210,106.20-314,940.60-115,190.40

Finding the Fourth Proportional to 210,106.20, 314,940.60 and 115,190.40

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Solution

The fourth proportional to 210,106.20, 314,940.60 and 115,190.40 is: 172,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,106.20 : 314,940.60 = 115,190.40 : x
  2. Step 2: Convert to fraction form
    210,106.20/314,940.60 = 115,190.40/x
  3. Step 3: Cross multiply
    210,106.20x = 314,940.60 × 115,190.40
  4. Step 4: Simplify right side
    210,106.20x = 36,278,133,690.24
  5. Step 5: Solve for x
    x = 36,278,133,690.24/210,106.20
  6. Step 6: Final answer
    x = 172,665.70

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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.