Finding the Fourth Proportional to 163,577,970.19, 225,733,965.64 and 90,239,092.75
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Solution
The fourth proportional to 163,577,970.19, 225,733,965.64 and 90,239,092.75 is: 124,527,943.70
Step by Step Solution
- Step 1: Write the proportion equation
163,577,970.19 : 225,733,965.64 = 90,239,092.75 : x - Step 2: Convert to fraction form
163,577,970.19/225,733,965.64 = 90,239,092.75/x - Step 3: Cross multiply
163,577,970.19x = 225,733,965.64 × 90,239,092.75 - Step 4: Simplify right side
163,577,970.19x = 20,370,028,262,213,272 - Step 5: Solve for x
x = 20,370,028,262,213,272/163,577,970.19 - Step 6: Final answer
x = 124,527,943.70
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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.