Home / 72,006.20-108,009.30-68,725.70

Finding the Fourth Proportional to 72,006.20, 108,009.30 and 68,725.70

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Solution

The fourth proportional to 72,006.20, 108,009.30 and 68,725.70 is: 103,088.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,006.20 : 108,009.30 = 68,725.70 : x
  2. Step 2: Convert to fraction form
    72,006.20/108,009.30 = 68,725.70/x
  3. Step 3: Cross multiply
    72,006.20x = 108,009.30 × 68,725.70
  4. Step 4: Simplify right side
    72,006.20x = 7,423,014,749.01
  5. Step 5: Solve for x
    x = 7,423,014,749.01/72,006.20
  6. Step 6: Final answer
    x = 103,088.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.