Home / 142,228.32-196,267.50-81,789.36

Finding the Fourth Proportional to 142,228.32, 196,267.50 and 81,789.36

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Solution

The fourth proportional to 142,228.32, 196,267.50 and 81,789.36 is: 112,864.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,228.32 : 196,267.50 = 81,789.36 : x
  2. Step 2: Convert to fraction form
    142,228.32/196,267.50 = 81,789.36/x
  3. Step 3: Cross multiply
    142,228.32x = 196,267.50 × 81,789.36
  4. Step 4: Simplify right side
    142,228.32x = 16,052,593,213.80
  5. Step 5: Solve for x
    x = 16,052,593,213.80/142,228.32
  6. Step 6: Final answer
    x = 112,864.96

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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.