Finding the Fourth Proportional to 153,552,509.40, 211,902,478.92 and 83,938,173.96
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Solution
The fourth proportional to 153,552,509.40, 211,902,478.92 and 83,938,173.96 is: 115,834,688.78
Step by Step Solution
- Step 1: Write the proportion equation
153,552,509.40 : 211,902,478.92 = 83,938,173.96 : x - Step 2: Convert to fraction form
153,552,509.40/211,902,478.92 = 83,938,173.96/x - Step 3: Cross multiply
153,552,509.40x = 211,902,478.92 × 83,938,173.96 - Step 4: Simplify right side
153,552,509.40x = 17,786,707,138,142,190 - Step 5: Solve for x
x = 17,786,707,138,142,190/153,552,509.40 - Step 6: Final answer
x = 115,834,688.78
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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.