Finding the Fourth Proportional to 121,999,822.72, 168,317,668.33 and 77,972,593.08
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Solution
The fourth proportional to 121,999,822.72, 168,317,668.33 and 77,972,593.08 is: 107,575,279.77
Step by Step Solution
- Step 1: Write the proportion equation
121,999,822.72 : 168,317,668.33 = 77,972,593.08 : x - Step 2: Convert to fraction form
121,999,822.72/168,317,668.33 = 77,972,593.08/x - Step 3: Cross multiply
121,999,822.72x = 168,317,668.33 × 77,972,593.08 - Step 4: Simplify right side
121,999,822.72x = 13,124,165,060,869,494 - Step 5: Solve for x
x = 13,124,165,060,869,494/121,999,822.72 - Step 6: Final answer
x = 107,575,279.77
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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.