Home / 125,358.72-172,992.96-68,775.36

Finding the Fourth Proportional to 125,358.72, 172,992.96 and 68,775.36

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Solution

The fourth proportional to 125,358.72, 172,992.96 and 68,775.36 is: 94,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,358.72 : 172,992.96 = 68,775.36 : x
  2. Step 2: Convert to fraction form
    125,358.72/172,992.96 = 68,775.36/x
  3. Step 3: Cross multiply
    125,358.72x = 172,992.96 × 68,775.36
  4. Step 4: Simplify right side
    125,358.72x = 11,897,653,101.47
  5. Step 5: Solve for x
    x = 11,897,653,101.47/125,358.72
  6. Step 6: Final answer
    x = 94,908.86

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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.