Home / 100,379,993.40-138,446,292.60-72,606,886.74

Finding the Fourth Proportional to 100,379,993.40, 138,446,292.60 and 72,606,886.74

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Solution

The fourth proportional to 100,379,993.40, 138,446,292.60 and 72,606,886.74 is: 100,141,013.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,379,993.40 : 138,446,292.60 = 72,606,886.74 : x
  2. Step 2: Convert to fraction form
    100,379,993.40/138,446,292.60 = 72,606,886.74/x
  3. Step 3: Cross multiply
    100,379,993.40x = 138,446,292.60 × 72,606,886.74
  4. Step 4: Simplify right side
    100,379,993.40x = 10,052,154,286,381,098
  5. Step 5: Solve for x
    x = 10,052,154,286,381,098/100,379,993.40
  6. Step 6: Final answer
    x = 100,141,013.62

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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.