Finding the Fourth Proportional to 139,968,102.30, 209,952,153.45 and 103,688,396.70
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Solution
The fourth proportional to 139,968,102.30, 209,952,153.45 and 103,688,396.70 is: 155,532,595.05
Step by Step Solution
- Step 1: Write the proportion equation
139,968,102.30 : 209,952,153.45 = 103,688,396.70 : x - Step 2: Convert to fraction form
139,968,102.30/209,952,153.45 = 103,688,396.70/x - Step 3: Cross multiply
139,968,102.30x = 209,952,153.45 × 103,688,396.70 - Step 4: Simplify right side
139,968,102.30x = 21,769,602,174,942,872 - Step 5: Solve for x
x = 21,769,602,174,942,872/139,968,102.30 - Step 6: Final answer
x = 155,532,595.05
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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.