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Finding the Fourth Proportional to 139,454,911.70, 209,182,367.55 and 130,951,855.70

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Solution

The fourth proportional to 139,454,911.70, 209,182,367.55 and 130,951,855.70 is: 196,427,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,454,911.70 : 209,182,367.55 = 130,951,855.70 : x
  2. Step 2: Convert to fraction form
    139,454,911.70/209,182,367.55 = 130,951,855.70/x
  3. Step 3: Cross multiply
    139,454,911.70x = 209,182,367.55 × 130,951,855.70
  4. Step 4: Simplify right side
    139,454,911.70x = 27,392,819,210,391,964
  5. Step 5: Solve for x
    x = 27,392,819,210,391,964/139,454,911.70
  6. Step 6: Final answer
    x = 196,427,783.55

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Similar ratio
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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.