Finding the Fourth Proportional to 121,512,656.16, 167,690,417.40 and 69,306,549.12
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Solution
The fourth proportional to 121,512,656.16, 167,690,417.40 and 69,306,549.12 is: 95,644,721.45
Step by Step Solution
- Step 1: Write the proportion equation
121,512,656.16 : 167,690,417.40 = 69,306,549.12 : x - Step 2: Convert to fraction form
121,512,656.16/167,690,417.40 = 69,306,549.12/x - Step 3: Cross multiply
121,512,656.16x = 167,690,417.40 × 69,306,549.12 - Step 4: Simplify right side
121,512,656.16x = 11,622,044,150,486,404 - Step 5: Solve for x
x = 11,622,044,150,486,404/121,512,656.16 - Step 6: Final answer
x = 95,644,721.45
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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.