Home / 211,420.76-291,913.72-136,100.48

Finding the Fourth Proportional to 211,420.76, 291,913.72 and 136,100.48

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Solution

The fourth proportional to 211,420.76, 291,913.72 and 136,100.48 is: 187,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,420.76 : 291,913.72 = 136,100.48 : x
  2. Step 2: Convert to fraction form
    211,420.76/291,913.72 = 136,100.48/x
  3. Step 3: Cross multiply
    211,420.76x = 291,913.72 × 136,100.48
  4. Step 4: Simplify right side
    211,420.76x = 39,729,597,410.59
  5. Step 5: Solve for x
    x = 39,729,597,410.59/211,420.76
  6. Step 6: Final answer
    x = 187,917.20

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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.