Finding the Fourth Proportional to 128,284,338.13, 177,033,773.90 and 75,363,276.49
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Solution
The fourth proportional to 128,284,338.13, 177,033,773.90 and 75,363,276.49 is: 104,002,136.54
Step by Step Solution
- Step 1: Write the proportion equation
128,284,338.13 : 177,033,773.90 = 75,363,276.49 : x - Step 2: Convert to fraction form
128,284,338.13/177,033,773.90 = 75,363,276.49/x - Step 3: Cross multiply
128,284,338.13x = 177,033,773.90 × 75,363,276.49 - Step 4: Simplify right side
128,284,338.13x = 13,341,845,249,816,128 - Step 5: Solve for x
x = 13,341,845,249,816,128/128,284,338.13 - Step 6: Final answer
x = 104,002,136.54
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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.