Finding the Fourth Proportional to 155,382,143.48, 214,427,379.32 and 85,767,539.12
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Solution
The fourth proportional to 155,382,143.48, 214,427,379.32 and 85,767,539.12 is: 118,359,215.75
Step by Step Solution
- Step 1: Write the proportion equation
155,382,143.48 : 214,427,379.32 = 85,767,539.12 : x - Step 2: Convert to fraction form
155,382,143.48/214,427,379.32 = 85,767,539.12/x - Step 3: Cross multiply
155,382,143.48x = 214,427,379.32 × 85,767,539.12 - Step 4: Simplify right side
155,382,143.48x = 18,390,908,644,227,180 - Step 5: Solve for x
x = 18,390,908,644,227,180/155,382,143.48 - Step 6: Final answer
x = 118,359,215.75
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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.