Home / 100,738,438.40-151,107,657.60-78,819,449.60

Finding the Fourth Proportional to 100,738,438.40, 151,107,657.60 and 78,819,449.60

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Solution

The fourth proportional to 100,738,438.40, 151,107,657.60 and 78,819,449.60 is: 118,229,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,738,438.40 : 151,107,657.60 = 78,819,449.60 : x
  2. Step 2: Convert to fraction form
    100,738,438.40/151,107,657.60 = 78,819,449.60/x
  3. Step 3: Cross multiply
    100,738,438.40x = 151,107,657.60 × 78,819,449.60
  4. Step 4: Simplify right side
    100,738,438.40x = 11,910,222,402,377,256
  5. Step 5: Solve for x
    x = 11,910,222,402,377,256/100,738,438.40
  6. Step 6: Final answer
    x = 118,229,174.40

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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.