Finding the Fourth Proportional to 128,459,847.84, 177,269,848.26 and 69,721,251.84
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Solution
The fourth proportional to 128,459,847.84, 177,269,848.26 and 69,721,251.84 is: 96,212,753.96
Step by Step Solution
- Step 1: Write the proportion equation
128,459,847.84 : 177,269,848.26 = 69,721,251.84 : x - Step 2: Convert to fraction form
128,459,847.84/177,269,848.26 = 69,721,251.84/x - Step 3: Cross multiply
128,459,847.84x = 177,269,848.26 × 69,721,251.84 - Step 4: Simplify right side
128,459,847.84x = 12,359,475,734,174,046 - Step 5: Solve for x
x = 12,359,475,734,174,046/128,459,847.84 - Step 6: Final answer
x = 96,212,753.96
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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.