Finding the Fourth Proportional to 159,730,161.57, 220,427,639.45 and 86,391,303.57
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Solution
The fourth proportional to 159,730,161.57, 220,427,639.45 and 86,391,303.57 is: 119,220,007.84
Step by Step Solution
- Step 1: Write the proportion equation
159,730,161.57 : 220,427,639.45 = 86,391,303.57 : x - Step 2: Convert to fraction form
159,730,161.57/220,427,639.45 = 86,391,303.57/x - Step 3: Cross multiply
159,730,161.57x = 220,427,639.45 × 86,391,303.57 - Step 4: Simplify right side
159,730,161.57x = 19,043,031,114,511,500 - Step 5: Solve for x
x = 19,043,031,114,511,500/159,730,161.57 - Step 6: Final answer
x = 119,220,007.84
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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.