Finding the Fourth Proportional to 165,220,821.70, 247,831,232.55 and 79,127,379.70
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Solution
The fourth proportional to 165,220,821.70, 247,831,232.55 and 79,127,379.70 is: 118,691,069.55
Step by Step Solution
- Step 1: Write the proportion equation
165,220,821.70 : 247,831,232.55 = 79,127,379.70 : x - Step 2: Convert to fraction form
165,220,821.70/247,831,232.55 = 79,127,379.70/x - Step 3: Cross multiply
165,220,821.70x = 247,831,232.55 × 79,127,379.70 - Step 4: Simplify right side
165,220,821.70x = 19,610,236,039,502,852 - Step 5: Solve for x
x = 19,610,236,039,502,852/165,220,821.70 - Step 6: Final answer
x = 118,691,069.55
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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.