Home / 126,187,286.40-189,266,932.80-103,428,489.60

Finding the Fourth Proportional to 126,187,286.40, 189,266,932.80 and 103,428,489.60

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Solution

The fourth proportional to 126,187,286.40, 189,266,932.80 and 103,428,489.60 is: 155,131,262.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,187,286.40 : 189,266,932.80 = 103,428,489.60 : x
  2. Step 2: Convert to fraction form
    126,187,286.40/189,266,932.80 = 103,428,489.60/x
  3. Step 3: Cross multiply
    126,187,286.40x = 189,266,932.80 × 103,428,489.60
  4. Step 4: Simplify right side
    126,187,286.40x = 19,575,592,990,728,700
  5. Step 5: Solve for x
    x = 19,575,592,990,728,700/126,187,286.40
  6. Step 6: Final answer
    x = 155,131,262.02

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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.