Finding the Fourth Proportional to 129,482,074.20, 178,683,177.08 and 70,743,478.08
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Solution
The fourth proportional to 129,482,074.20, 178,683,177.08 and 70,743,478.08 is: 97,624,860.42
Step by Step Solution
- Step 1: Write the proportion equation
129,482,074.20 : 178,683,177.08 = 70,743,478.08 : x - Step 2: Convert to fraction form
129,482,074.20/178,683,177.08 = 70,743,478.08/x - Step 3: Cross multiply
129,482,074.20x = 178,683,177.08 × 70,743,478.08 - Step 4: Simplify right side
129,482,074.20x = 12,640,669,421,023,740 - Step 5: Solve for x
x = 12,640,669,421,023,740/129,482,074.20 - Step 6: Final answer
x = 97,624,860.42
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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.