Home / 211,736.16-292,219.11-121,100.40

Finding the Fourth Proportional to 211,736.16, 292,219.11 and 121,100.40

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Solution

The fourth proportional to 211,736.16, 292,219.11 and 121,100.40 is: 167,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,736.16 : 292,219.11 = 121,100.40 : x
  2. Step 2: Convert to fraction form
    211,736.16/292,219.11 = 121,100.40/x
  3. Step 3: Cross multiply
    211,736.16x = 292,219.11 × 121,100.40
  4. Step 4: Simplify right side
    211,736.16x = 35,387,851,108.64
  5. Step 5: Solve for x
    x = 35,387,851,108.64/211,736.16
  6. Step 6: Final answer
    x = 167,131.83

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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.