Finding the Fourth Proportional to 129,473,458.16, 178,673,443.94 and 69,934,753.99
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Solution
The fourth proportional to 129,473,458.16, 178,673,443.94 and 69,934,753.99 is: 96,509,999.22
Step by Step Solution
- Step 1: Write the proportion equation
129,473,458.16 : 178,673,443.94 = 69,934,753.99 : x - Step 2: Convert to fraction form
129,473,458.16/178,673,443.94 = 69,934,753.99/x - Step 3: Cross multiply
129,473,458.16x = 178,673,443.94 × 69,934,753.99 - Step 4: Simplify right side
129,473,458.16x = 12,495,483,345,246,916 - Step 5: Solve for x
x = 12,495,483,345,246,916/129,473,458.16 - Step 6: Final answer
x = 96,509,999.22
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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.