Finding the Fourth Proportional to 143,704,895.58, 198,312,828.66 and 77,625,390.42
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Solution
The fourth proportional to 143,704,895.58, 198,312,828.66 and 77,625,390.42 is: 107,123,078.08
Step by Step Solution
- Step 1: Write the proportion equation
143,704,895.58 : 198,312,828.66 = 77,625,390.42 : x - Step 2: Convert to fraction form
143,704,895.58/198,312,828.66 = 77,625,390.42/x - Step 3: Cross multiply
143,704,895.58x = 198,312,828.66 × 77,625,390.42 - Step 4: Simplify right side
143,704,895.58x = 15,394,110,750,027,066 - Step 5: Solve for x
x = 15,394,110,750,027,066/143,704,895.58 - Step 6: Final answer
x = 107,123,078.08
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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.