Finding the Fourth Proportional to 161,705,897.40, 242,569,343.70 and 85,178,393.40
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Solution
The fourth proportional to 161,705,897.40, 242,569,343.70 and 85,178,393.40 is: 127,773,119.70
Step by Step Solution
- Step 1: Write the proportion equation
161,705,897.40 : 242,569,343.70 = 85,178,393.40 : x - Step 2: Convert to fraction form
161,705,897.40/242,569,343.70 = 85,178,393.40/x - Step 3: Cross multiply
161,705,897.40x = 242,569,343.70 × 85,178,393.40 - Step 4: Simplify right side
161,705,897.40x = 20,661,666,984,458,412 - Step 5: Solve for x
x = 20,661,666,984,458,412/161,705,897.40 - Step 6: Final answer
x = 127,773,119.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.