Finding the Fourth Proportional to 109,135,943.90, 163,703,915.85 and 74,698,567.10
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Solution
The fourth proportional to 109,135,943.90, 163,703,915.85 and 74,698,567.10 is: 112,047,850.65
Step by Step Solution
- Step 1: Write the proportion equation
109,135,943.90 : 163,703,915.85 = 74,698,567.10 : x - Step 2: Convert to fraction form
109,135,943.90/163,703,915.85 = 74,698,567.10/x - Step 3: Cross multiply
109,135,943.90x = 163,703,915.85 × 74,698,567.10 - Step 4: Simplify right side
109,135,943.90x = 12,228,447,942,653,978 - Step 5: Solve for x
x = 12,228,447,942,653,978/109,135,943.90 - Step 6: Final answer
x = 112,047,850.65
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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.