Finding the Fourth Proportional to 128,284,340.17, 177,033,776.70 and 75,363,278.53
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Solution
The fourth proportional to 128,284,340.17, 177,033,776.70 and 75,363,278.53 is: 104,002,139.35
Step by Step Solution
- Step 1: Write the proportion equation
128,284,340.17 : 177,033,776.70 = 75,363,278.53 : x - Step 2: Convert to fraction form
128,284,340.17/177,033,776.70 = 75,363,278.53/x - Step 3: Cross multiply
128,284,340.17x = 177,033,776.70 × 75,363,278.53 - Step 4: Simplify right side
128,284,340.17x = 13,341,845,822,659,924 - Step 5: Solve for x
x = 13,341,845,822,659,924/128,284,340.17 - Step 6: Final answer
x = 104,002,139.35
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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.