Finding the Fourth Proportional to 129,213,555.56, 178,316,832.10 and 70,476,221.08
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Solution
The fourth proportional to 129,213,555.56, 178,316,832.10 and 70,476,221.08 is: 97,258,344.35
Step by Step Solution
- Step 1: Write the proportion equation
129,213,555.56 : 178,316,832.10 = 70,476,221.08 : x - Step 2: Convert to fraction form
129,213,555.56/178,316,832.10 = 70,476,221.08/x - Step 3: Cross multiply
129,213,555.56x = 178,316,832.10 × 70,476,221.08 - Step 4: Simplify right side
129,213,555.56x = 12,567,096,481,364,840 - Step 5: Solve for x
x = 12,567,096,481,364,840/129,213,555.56 - Step 6: Final answer
x = 97,258,344.35
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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.