Home / 211,870.88-292,309.40-121,193.80

Finding the Fourth Proportional to 211,870.88, 292,309.40 and 121,193.80

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Solution

The fourth proportional to 211,870.88, 292,309.40 and 121,193.80 is: 167,206.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,870.88 : 292,309.40 = 121,193.80 : x
  2. Step 2: Convert to fraction form
    211,870.88/292,309.40 = 121,193.80/x
  3. Step 3: Cross multiply
    211,870.88x = 292,309.40 × 121,193.80
  4. Step 4: Simplify right side
    211,870.88x = 35,426,086,961.72
  5. Step 5: Solve for x
    x = 35,426,086,961.72/211,870.88
  6. Step 6: Final answer
    x = 167,206.02

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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.