Finding the Fourth Proportional to 121,244,488.72, 167,317,461.44 and 65,489,908.80
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Solution
The fourth proportional to 121,244,488.72, 167,317,461.44 and 65,489,908.80 is: 90,376,110.34
Step by Step Solution
- Step 1: Write the proportion equation
121,244,488.72 : 167,317,461.44 = 65,489,908.80 : x - Step 2: Convert to fraction form
121,244,488.72/167,317,461.44 = 65,489,908.80/x - Step 3: Cross multiply
121,244,488.72x = 167,317,461.44 × 65,489,908.80 - Step 4: Simplify right side
121,244,488.72x = 10,957,605,291,267,402 - Step 5: Solve for x
x = 10,957,605,291,267,402/121,244,488.72 - Step 6: Final answer
x = 90,376,110.34
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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.