Home / 128,873,100.30-193,415,404.05-127,865,330.70

Finding the Fourth Proportional to 128,873,100.30, 193,415,404.05 and 127,865,330.70

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Solution

The fourth proportional to 128,873,100.30, 193,415,404.05 and 127,865,330.70 is: 191,902,922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,873,100.30 : 193,415,404.05 = 127,865,330.70 : x
  2. Step 2: Convert to fraction form
    128,873,100.30/193,415,404.05 = 127,865,330.70/x
  3. Step 3: Cross multiply
    128,873,100.30x = 193,415,404.05 × 127,865,330.70
  4. Step 4: Simplify right side
    128,873,100.30x = 24,731,124,601,327,372
  5. Step 5: Solve for x
    x = 24,731,124,601,327,372/128,873,100.30
  6. Step 6: Final answer
    x = 191,902,922.67

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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.