Finding the Fourth Proportional to 130,676,379.49, 180,327,879.34 and 71,136,437.68
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Solution
The fourth proportional to 130,676,379.49, 180,327,879.34 and 71,136,437.68 is: 98,165,276.70
Step by Step Solution
- Step 1: Write the proportion equation
130,676,379.49 : 180,327,879.34 = 71,136,437.68 : x - Step 2: Convert to fraction form
130,676,379.49/180,327,879.34 = 71,136,437.68/x - Step 3: Cross multiply
130,676,379.49x = 180,327,879.34 × 71,136,437.68 - Step 4: Simplify right side
130,676,379.49x = 12,827,882,950,636,472 - Step 5: Solve for x
x = 12,827,882,950,636,472/130,676,379.49 - Step 6: Final answer
x = 98,165,276.70
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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.