Home / 198,422.37-297,547.44-72,020.61

Finding the Fourth Proportional to 198,422.37, 297,547.44 and 72,020.61

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Solution

The fourth proportional to 198,422.37, 297,547.44 and 72,020.61 is: 107,999.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,422.37 : 297,547.44 = 72,020.61 : x
  2. Step 2: Convert to fraction form
    198,422.37/297,547.44 = 72,020.61/x
  3. Step 3: Cross multiply
    198,422.37x = 297,547.44 × 72,020.61
  4. Step 4: Simplify right side
    198,422.37x = 21,429,548,132.74
  5. Step 5: Solve for x
    x = 21,429,548,132.74/198,422.37
  6. Step 6: Final answer
    x = 107,999.66

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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.