Finding the Fourth Proportional to 122,376,570.48, 168,891,866.64 and 91,382,931.36
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Solution
The fourth proportional to 122,376,570.48, 168,891,866.64 and 91,382,931.36 is: 126,117,554.99
Step by Step Solution
- Step 1: Write the proportion equation
122,376,570.48 : 168,891,866.64 = 91,382,931.36 : x - Step 2: Convert to fraction form
122,376,570.48/168,891,866.64 = 91,382,931.36/x - Step 3: Cross multiply
122,376,570.48x = 168,891,866.64 × 91,382,931.36 - Step 4: Simplify right side
122,376,570.48x = 15,433,833,856,425,392 - Step 5: Solve for x
x = 15,433,833,856,425,392/122,376,570.48 - Step 6: Final answer
x = 126,117,554.99
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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.