Home / 212,520.90-293,247.70-121,880.69

Finding the Fourth Proportional to 212,520.90, 293,247.70 and 121,880.69

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Solution

The fourth proportional to 212,520.90, 293,247.70 and 121,880.69 is: 168,177.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,520.90 : 293,247.70 = 121,880.69 : x
  2. Step 2: Convert to fraction form
    212,520.90/293,247.70 = 121,880.69/x
  3. Step 3: Cross multiply
    212,520.90x = 293,247.70 × 121,880.69
  4. Step 4: Simplify right side
    212,520.90x = 35,741,232,016.91
  5. Step 5: Solve for x
    x = 35,741,232,016.91/212,520.90
  6. Step 6: Final answer
    x = 168,177.49

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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.