Finding the Fourth Proportional to 129,453,189.62, 178,644,857.01 and 71,506,437.62
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Solution
The fourth proportional to 129,453,189.62, 178,644,857.01 and 71,506,437.62 is: 98,678,583.06
Step by Step Solution
- Step 1: Write the proportion equation
129,453,189.62 : 178,644,857.01 = 71,506,437.62 : x - Step 2: Convert to fraction form
129,453,189.62/178,644,857.01 = 71,506,437.62/x - Step 3: Cross multiply
129,453,189.62x = 178,644,857.01 × 71,506,437.62 - Step 4: Simplify right side
129,453,189.62x = 12,774,257,323,919,384 - Step 5: Solve for x
x = 12,774,257,323,919,384/129,453,189.62 - Step 6: Final answer
x = 98,678,583.06
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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.