Finding the Fourth Proportional to 158,318,801.40, 218,479,567.65 and 86,791,555.19
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Solution
The fourth proportional to 158,318,801.40, 218,479,567.65 and 86,791,555.19 is: 119,772,138.78
Step by Step Solution
- Step 1: Write the proportion equation
158,318,801.40 : 218,479,567.65 = 86,791,555.19 : x - Step 2: Convert to fraction form
158,318,801.40/218,479,567.65 = 86,791,555.19/x - Step 3: Cross multiply
158,318,801.40x = 218,479,567.65 × 86,791,555.19 - Step 4: Simplify right side
158,318,801.40x = 18,962,181,452,489,916 - Step 5: Solve for x
x = 18,962,181,452,489,916/158,318,801.40 - Step 6: Final answer
x = 119,772,138.78
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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.