Finding the Fourth Proportional to 153,912,253.26, 212,399,114.37 and 83,347,985.23
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Solution
The fourth proportional to 153,912,253.26, 212,399,114.37 and 83,347,985.23 is: 115,020,330.56
Step by Step Solution
- Step 1: Write the proportion equation
153,912,253.26 : 212,399,114.37 = 83,347,985.23 : x - Step 2: Convert to fraction form
153,912,253.26/212,399,114.37 = 83,347,985.23/x - Step 3: Cross multiply
153,912,253.26x = 212,399,114.37 × 83,347,985.23 - Step 4: Simplify right side
153,912,253.26x = 17,703,038,247,375,842 - Step 5: Solve for x
x = 17,703,038,247,375,842/153,912,253.26 - Step 6: Final answer
x = 115,020,330.56
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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.