Home / 142,286.15-196,391.77-81,862.98

Finding the Fourth Proportional to 142,286.15, 196,391.77 and 81,862.98

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Solution

The fourth proportional to 142,286.15, 196,391.77 and 81,862.98 is: 112,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,286.15 : 196,391.77 = 81,862.98 : x
  2. Step 2: Convert to fraction form
    142,286.15/196,391.77 = 81,862.98/x
  3. Step 3: Cross multiply
    142,286.15x = 196,391.77 × 81,862.98
  4. Step 4: Simplify right side
    142,286.15x = 16,077,215,539.67
  5. Step 5: Solve for x
    x = 16,077,215,539.67/142,286.15
  6. Step 6: Final answer
    x = 112,992.13

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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.