Home / 78,733,999.80-118,100,999.70-73,951,030.80

Finding the Fourth Proportional to 78,733,999.80, 118,100,999.70 and 73,951,030.80

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Solution

The fourth proportional to 78,733,999.80, 118,100,999.70 and 73,951,030.80 is: 110,926,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733,999.80 : 118,100,999.70 = 73,951,030.80 : x
  2. Step 2: Convert to fraction form
    78,733,999.80/118,100,999.70 = 73,951,030.80/x
  3. Step 3: Cross multiply
    78,733,999.80x = 118,100,999.70 × 73,951,030.80
  4. Step 4: Simplify right side
    78,733,999.80x = 8,733,690,666,325,491
  5. Step 5: Solve for x
    x = 8,733,690,666,325,491/78,733,999.80
  6. Step 6: Final answer
    x = 110,926,546.20

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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.