Finding the Fourth Proportional to 149,121,709.02, 205,681,952.96 and 99,537,082.74
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Solution
The fourth proportional to 149,121,709.02, 205,681,952.96 and 99,537,082.74 is: 137,290,416.69
Step by Step Solution
- Step 1: Write the proportion equation
149,121,709.02 : 205,681,952.96 = 99,537,082.74 : x - Step 2: Convert to fraction form
149,121,709.02/205,681,952.96 = 99,537,082.74/x - Step 3: Cross multiply
149,121,709.02x = 205,681,952.96 × 99,537,082.74 - Step 4: Simplify right side
149,121,709.02x = 20,472,981,569,406,624 - Step 5: Solve for x
x = 20,472,981,569,406,624/149,121,709.02 - Step 6: Final answer
x = 137,290,416.69
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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.