Finding the Fourth Proportional to 129,473,457.65, 178,673,443.25 and 69,934,753.49
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Solution
The fourth proportional to 129,473,457.65, 178,673,443.25 and 69,934,753.49 is: 96,509,998.53
Step by Step Solution
- Step 1: Write the proportion equation
129,473,457.65 : 178,673,443.25 = 69,934,753.49 : x - Step 2: Convert to fraction form
129,473,457.65/178,673,443.25 = 69,934,753.49/x - Step 3: Cross multiply
129,473,457.65x = 178,673,443.25 × 69,934,753.49 - Step 4: Simplify right side
129,473,457.65x = 12,495,483,208,179,778 - Step 5: Solve for x
x = 12,495,483,208,179,778/129,473,457.65 - Step 6: Final answer
x = 96,509,998.53
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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.