Finding the Fourth Proportional to 129,977,752.16, 193,821,071.60 and 128,812,125.44
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Solution
The fourth proportional to 129,977,752.16, 193,821,071.60 and 128,812,125.44 is: 192,082,904.75
Step by Step Solution
- Step 1: Write the proportion equation
129,977,752.16 : 193,821,071.60 = 128,812,125.44 : x - Step 2: Convert to fraction form
129,977,752.16/193,821,071.60 = 128,812,125.44/x - Step 3: Cross multiply
129,977,752.16x = 193,821,071.60 × 128,812,125.44 - Step 4: Simplify right side
129,977,752.16x = 24,966,504,187,854,420 - Step 5: Solve for x
x = 24,966,504,187,854,420/129,977,752.16 - Step 6: Final answer
x = 192,082,904.75
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.