Home / 211,821.89-292,311.00-121,200.12

Finding the Fourth Proportional to 211,821.89, 292,311.00 and 121,200.12

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Solution

The fourth proportional to 211,821.89, 292,311.00 and 121,200.12 is: 167,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,821.89 : 292,311.00 = 121,200.12 : x
  2. Step 2: Convert to fraction form
    211,821.89/292,311.00 = 121,200.12/x
  3. Step 3: Cross multiply
    211,821.89x = 292,311.00 × 121,200.12
  4. Step 4: Simplify right side
    211,821.89x = 35,428,129,440.32
  5. Step 5: Solve for x
    x = 35,428,129,440.32/211,821.89
  6. Step 6: Final answer
    x = 167,254.34

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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.