Finding the Fourth Proportional to 118,378,609.90, 163,362,423.99 and 69,486,037.90
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Solution
The fourth proportional to 118,378,609.90, 163,362,423.99 and 69,486,037.90 is: 95,890,698.45
Step by Step Solution
- Step 1: Write the proportion equation
118,378,609.90 : 163,362,423.99 = 69,486,037.90 : x - Step 2: Convert to fraction form
118,378,609.90/163,362,423.99 = 69,486,037.90/x - Step 3: Cross multiply
118,378,609.90x = 163,362,423.99 × 69,486,037.90 - Step 4: Simplify right side
118,378,609.90x = 11,351,407,584,805,010 - Step 5: Solve for x
x = 11,351,407,584,805,010/118,378,609.90 - Step 6: Final answer
x = 95,890,698.45
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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.