Home / 187,920.07-281,893.94-81,407.36

Finding the Fourth Proportional to 187,920.07, 281,893.94 and 81,407.36

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Solution

The fourth proportional to 187,920.07, 281,893.94 and 81,407.36 is: 122,117.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,920.07 : 281,893.94 = 81,407.36 : x
  2. Step 2: Convert to fraction form
    187,920.07/281,893.94 = 81,407.36/x
  3. Step 3: Cross multiply
    187,920.07x = 281,893.94 × 81,407.36
  4. Step 4: Simplify right side
    187,920.07x = 22,948,241,455.40
  5. Step 5: Solve for x
    x = 22,948,241,455.40/187,920.07
  6. Step 6: Final answer
    x = 122,117.03

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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.