Finding the Fourth Proportional to 129,880,417.28, 179,185,086.56 and 74,128,932.08
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Solution
The fourth proportional to 129,880,417.28, 179,185,086.56 and 74,128,932.08 is: 102,269,452.08
Step by Step Solution
- Step 1: Write the proportion equation
129,880,417.28 : 179,185,086.56 = 74,128,932.08 : x - Step 2: Convert to fraction form
129,880,417.28/179,185,086.56 = 74,128,932.08/x - Step 3: Cross multiply
129,880,417.28x = 179,185,086.56 × 74,128,932.08 - Step 4: Simplify right side
129,880,417.28x = 13,282,799,111,355,160 - Step 5: Solve for x
x = 13,282,799,111,355,160/129,880,417.28 - Step 6: Final answer
x = 102,269,452.08
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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.