Home / 155,067.81-213,977.59-87,092.20

Finding the Fourth Proportional to 155,067.81, 213,977.59 and 87,092.20

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Solution

The fourth proportional to 155,067.81, 213,977.59 and 87,092.20 is: 120,178.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,067.81 : 213,977.59 = 87,092.20 : x
  2. Step 2: Convert to fraction form
    155,067.81/213,977.59 = 87,092.20/x
  3. Step 3: Cross multiply
    155,067.81x = 213,977.59 × 87,092.20
  4. Step 4: Simplify right side
    155,067.81x = 18,635,779,063.80
  5. Step 5: Solve for x
    x = 18,635,779,063.80/155,067.81
  6. Step 6: Final answer
    x = 120,178.26

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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.