Finding the Fourth Proportional to 138,520,578.60, 207,643,815.90 and 65,609,206.20
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Solution
The fourth proportional to 138,520,578.60, 207,643,815.90 and 65,609,206.20 is: 98,348,895.67
Step by Step Solution
- Step 1: Write the proportion equation
138,520,578.60 : 207,643,815.90 = 65,609,206.20 : x - Step 2: Convert to fraction form
138,520,578.60/207,643,815.90 = 65,609,206.20/x - Step 3: Cross multiply
138,520,578.60x = 207,643,815.90 × 65,609,206.20 - Step 4: Simplify right side
138,520,578.60x = 13,623,345,933,537,940 - Step 5: Solve for x
x = 13,623,345,933,537,940/138,520,578.60 - Step 6: Final answer
x = 98,348,895.67
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.