Finding the Fourth Proportional to 136,132,305.21, 187,862,581.53 and 74,252,643.84
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Solution
The fourth proportional to 136,132,305.21, 187,862,581.53 and 74,252,643.84 is: 102,468,648.68
Step by Step Solution
- Step 1: Write the proportion equation
136,132,305.21 : 187,862,581.53 = 74,252,643.84 : x - Step 2: Convert to fraction form
136,132,305.21/187,862,581.53 = 74,252,643.84/x - Step 3: Cross multiply
136,132,305.21x = 187,862,581.53 × 74,252,643.84 - Step 4: Simplify right side
136,132,305.21x = 13,949,293,357,210,054 - Step 5: Solve for x
x = 13,949,293,357,210,054/136,132,305.21 - Step 6: Final answer
x = 102,468,648.68
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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.