Finding the Fourth Proportional to 103,121,270.79, 142,304,095.94 and 56,711,381.19
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Solution
The fourth proportional to 103,121,270.79, 142,304,095.94 and 56,711,381.19 is: 78,259,914.44
Step by Step Solution
- Step 1: Write the proportion equation
103,121,270.79 : 142,304,095.94 = 56,711,381.19 : x - Step 2: Convert to fraction form
103,121,270.79/142,304,095.94 = 56,711,381.19/x - Step 3: Cross multiply
103,121,270.79x = 142,304,095.94 × 56,711,381.19 - Step 4: Simplify right side
103,121,270.79x = 8,070,261,829,468,114 - Step 5: Solve for x
x = 8,070,261,829,468,114/103,121,270.79 - Step 6: Final answer
x = 78,259,914.44
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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.