Home / 142,067.68-213,046.12-53,272.80

Finding the Fourth Proportional to 142,067.68, 213,046.12 and 53,272.80

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Solution

The fourth proportional to 142,067.68, 213,046.12 and 53,272.80 is: 79,888.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,067.68 : 213,046.12 = 53,272.80 : x
  2. Step 2: Convert to fraction form
    142,067.68/213,046.12 = 53,272.80/x
  3. Step 3: Cross multiply
    142,067.68x = 213,046.12 × 53,272.80
  4. Step 4: Simplify right side
    142,067.68x = 11,349,563,341.54
  5. Step 5: Solve for x
    x = 11,349,563,341.54/142,067.68
  6. Step 6: Final answer
    x = 79,888.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.