Finding the Fourth Proportional to 121,518,778.23, 167,696,959.57 and 69,310,457.26
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Solution
The fourth proportional to 121,518,778.23, 167,696,959.57 and 69,310,457.26 is: 95,649,027.40
Step by Step Solution
- Step 1: Write the proportion equation
121,518,778.23 : 167,696,959.57 = 69,310,457.26 : x - Step 2: Convert to fraction form
121,518,778.23/167,696,959.57 = 69,310,457.26/x - Step 3: Cross multiply
121,518,778.23x = 167,696,959.57 × 69,310,457.26 - Step 4: Simplify right side
121,518,778.23x = 11,623,152,948,315,912 - Step 5: Solve for x
x = 11,623,152,948,315,912/121,518,778.23 - Step 6: Final answer
x = 95,649,027.40
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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.