Home / 129,438,034.40-194,157,051.60-81,065,093.60

Finding the Fourth Proportional to 129,438,034.40, 194,157,051.60 and 81,065,093.60

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Solution

The fourth proportional to 129,438,034.40, 194,157,051.60 and 81,065,093.60 is: 121,597,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,438,034.40 : 194,157,051.60 = 81,065,093.60 : x
  2. Step 2: Convert to fraction form
    129,438,034.40/194,157,051.60 = 81,065,093.60/x
  3. Step 3: Cross multiply
    129,438,034.40x = 194,157,051.60 × 81,065,093.60
  4. Step 4: Simplify right side
    129,438,034.40x = 15,739,359,561,054,028
  5. Step 5: Solve for x
    x = 15,739,359,561,054,028/129,438,034.40
  6. Step 6: Final answer
    x = 121,597,640.40

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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.