Finding the Fourth Proportional to 153,924,783.20, 212,413,575.58 and 83,359,821.53
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Solution
The fourth proportional to 153,924,783.20, 212,413,575.58 and 83,359,821.53 is: 115,035,131.98
Step by Step Solution
- Step 1: Write the proportion equation
153,924,783.20 : 212,413,575.58 = 83,359,821.53 : x - Step 2: Convert to fraction form
153,924,783.20/212,413,575.58 = 83,359,821.53/x - Step 3: Cross multiply
153,924,783.20x = 212,413,575.58 × 83,359,821.53 - Step 4: Simplify right side
153,924,783.20x = 17,706,757,750,897,968 - Step 5: Solve for x
x = 17,706,757,750,897,968/153,924,783.20 - Step 6: Final answer
x = 115,035,131.98
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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.