Finding the Fourth Proportional to 153,232,970.10, 211,465,965.88 and 83,622,834.90
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Solution
The fourth proportional to 153,232,970.10, 211,465,965.88 and 83,622,834.90 is: 115,401,949.99
Step by Step Solution
- Step 1: Write the proportion equation
153,232,970.10 : 211,465,965.88 = 83,622,834.90 : x - Step 2: Convert to fraction form
153,232,970.10/211,465,965.88 = 83,622,834.90/x - Step 3: Cross multiply
153,232,970.10x = 211,465,965.88 × 83,622,834.90 - Step 4: Simplify right side
153,232,970.10x = 17,683,383,551,752,274 - Step 5: Solve for x
x = 17,683,383,551,752,274/153,232,970.10 - Step 6: Final answer
x = 115,401,949.99
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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.