Finding the Fourth Proportional to 108,909,982.20, 163,364,973.30 and 84,251,119.80
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Solution
The fourth proportional to 108,909,982.20, 163,364,973.30 and 84,251,119.80 is: 126,376,679.70
Step by Step Solution
- Step 1: Write the proportion equation
108,909,982.20 : 163,364,973.30 = 84,251,119.80 : x - Step 2: Convert to fraction form
108,909,982.20/163,364,973.30 = 84,251,119.80/x - Step 3: Cross multiply
108,909,982.20x = 163,364,973.30 × 84,251,119.80 - Step 4: Simplify right side
108,909,982.20x = 13,763,681,936,622,102 - Step 5: Solve for x
x = 13,763,681,936,622,102/108,909,982.20 - Step 6: Final answer
x = 126,376,679.70
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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.