Home / 132,421.84-198,521-57,485.44

Finding the Fourth Proportional to 132,421.84, 198,521 and 57,485.44

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Solution

The fourth proportional to 132,421.84, 198,521 and 57,485.44 is: 86,179.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,421.84 : 198,521 = 57,485.44 : x
  2. Step 2: Convert to fraction form
    132,421.84/198,521 = 57,485.44/x
  3. Step 3: Cross multiply
    132,421.84x = 198,521 × 57,485.44
  4. Step 4: Simplify right side
    132,421.84x = 11,412,067,034.24
  5. Step 5: Solve for x
    x = 11,412,067,034.24/132,421.84
  6. Step 6: Final answer
    x = 86,179.64

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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.