Finding the Fourth Proportional to 187,542,162.12, 258,804,758.28 and 103,909,987.68
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Solution
The fourth proportional to 187,542,162.12, 258,804,758.28 and 103,909,987.68 is: 143,393,885.09
Step by Step Solution
- Step 1: Write the proportion equation
187,542,162.12 : 258,804,758.28 = 103,909,987.68 : x - Step 2: Convert to fraction form
187,542,162.12/258,804,758.28 = 103,909,987.68/x - Step 3: Cross multiply
187,542,162.12x = 258,804,758.28 × 103,909,987.68 - Step 4: Simplify right side
187,542,162.12x = 26,892,399,244,400,180 - Step 5: Solve for x
x = 26,892,399,244,400,180/187,542,162.12 - Step 6: Final answer
x = 143,393,885.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.