Home / 211,975.80-292,542.90-121,360.20

Finding the Fourth Proportional to 211,975.80, 292,542.90 and 121,360.20

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Solution

The fourth proportional to 211,975.80, 292,542.90 and 121,360.20 is: 167,486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,975.80 : 292,542.90 = 121,360.20 : x
  2. Step 2: Convert to fraction form
    211,975.80/292,542.90 = 121,360.20/x
  3. Step 3: Cross multiply
    211,975.80x = 292,542.90 × 121,360.20
  4. Step 4: Simplify right side
    211,975.80x = 35,503,064,852.58
  5. Step 5: Solve for x
    x = 35,503,064,852.58/211,975.80
  6. Step 6: Final answer
    x = 167,486.41

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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.