Home / 120,067.47-165,678.98-66,349.28

Finding the Fourth Proportional to 120,067.47, 165,678.98 and 66,349.28

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Solution

The fourth proportional to 120,067.47, 165,678.98 and 66,349.28 is: 91,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,067.47 : 165,678.98 = 66,349.28 : x
  2. Step 2: Convert to fraction form
    120,067.47/165,678.98 = 66,349.28/x
  3. Step 3: Cross multiply
    120,067.47x = 165,678.98 × 66,349.28
  4. Step 4: Simplify right side
    120,067.47x = 10,992,681,034.13
  5. Step 5: Solve for x
    x = 10,992,681,034.13/120,067.47
  6. Step 6: Final answer
    x = 91,554.20

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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.