Finding the Fourth Proportional to 143,726,302.35, 215,510,721.53 and 70,782,678.99
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Solution
The fourth proportional to 143,726,302.35, 215,510,721.53 and 70,782,678.99 is: 106,135,244.36
Step by Step Solution
- Step 1: Write the proportion equation
143,726,302.35 : 215,510,721.53 = 70,782,678.99 : x - Step 2: Convert to fraction form
143,726,302.35/215,510,721.53 = 70,782,678.99/x - Step 3: Cross multiply
143,726,302.35x = 215,510,721.53 × 70,782,678.99 - Step 4: Simplify right side
143,726,302.35x = 15,254,426,220,607,358 - Step 5: Solve for x
x = 15,254,426,220,607,358/143,726,302.35 - Step 6: Final answer
x = 106,135,244.36
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.