Home / 142,107.08-196,104.85-81,676.15

Finding the Fourth Proportional to 142,107.08, 196,104.85 and 81,676.15

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Solution

The fourth proportional to 142,107.08, 196,104.85 and 81,676.15 is: 112,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,107.08 : 196,104.85 = 81,676.15 : x
  2. Step 2: Convert to fraction form
    142,107.08/196,104.85 = 81,676.15/x
  3. Step 3: Cross multiply
    142,107.08x = 196,104.85 × 81,676.15
  4. Step 4: Simplify right side
    142,107.08x = 16,017,088,449.88
  5. Step 5: Solve for x
    x = 16,017,088,449.88/142,107.08
  6. Step 6: Final answer
    x = 112,711.41

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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.