Finding the Fourth Proportional to 108,909,969.20, 163,364,953.80 and 84,251,106.80
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Solution
The fourth proportional to 108,909,969.20, 163,364,953.80 and 84,251,106.80 is: 126,376,660.20
Step by Step Solution
- Step 1: Write the proportion equation
108,909,969.20 : 163,364,953.80 = 84,251,106.80 : x - Step 2: Convert to fraction form
108,909,969.20/163,364,953.80 = 84,251,106.80/x - Step 3: Cross multiply
108,909,969.20x = 163,364,953.80 × 84,251,106.80 - Step 4: Simplify right side
108,909,969.20x = 13,763,678,169,980,866 - Step 5: Solve for x
x = 13,763,678,169,980,866/108,909,969.20 - Step 6: Final answer
x = 126,376,660.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.