Home / 142,293.90-196,360.11-81,883.95

Finding the Fourth Proportional to 142,293.90, 196,360.11 and 81,883.95

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Solution

The fourth proportional to 142,293.90, 196,360.11 and 81,883.95 is: 112,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,293.90 : 196,360.11 = 81,883.95 : x
  2. Step 2: Convert to fraction form
    142,293.90/196,360.11 = 81,883.95/x
  3. Step 3: Cross multiply
    142,293.90x = 196,360.11 × 81,883.95
  4. Step 4: Simplify right side
    142,293.90x = 16,078,741,429.23
  5. Step 5: Solve for x
    x = 16,078,741,429.23/142,293.90
  6. Step 6: Final answer
    x = 112,996.70

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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.