Home / 142,290.88-196,394.15-81,896.40

Finding the Fourth Proportional to 142,290.88, 196,394.15 and 81,896.40

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Solution

The fourth proportional to 142,290.88, 196,394.15 and 81,896.40 is: 113,035.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,290.88 : 196,394.15 = 81,896.40 : x
  2. Step 2: Convert to fraction form
    142,290.88/196,394.15 = 81,896.40/x
  3. Step 3: Cross multiply
    142,290.88x = 196,394.15 × 81,896.40
  4. Step 4: Simplify right side
    142,290.88x = 16,083,973,866.06
  5. Step 5: Solve for x
    x = 16,083,973,866.06/142,290.88
  6. Step 6: Final answer
    x = 113,035.87

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1.5x scale

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.