Finding the Fourth Proportional to 160,390,371.98, 221,313,431.21 and 93,420,351.85
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Solution
The fourth proportional to 160,390,371.98, 221,313,431.21 and 93,420,351.85 is: 128,905,359.83
Step by Step Solution
- Step 1: Write the proportion equation
160,390,371.98 : 221,313,431.21 = 93,420,351.85 : x - Step 2: Convert to fraction form
160,390,371.98/221,313,431.21 = 93,420,351.85/x - Step 3: Cross multiply
160,390,371.98x = 221,313,431.21 × 93,420,351.85 - Step 4: Simplify right side
160,390,371.98x = 20,675,178,612,768,972 - Step 5: Solve for x
x = 20,675,178,612,768,972/160,390,371.98 - Step 6: Final answer
x = 128,905,359.83
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1.5x scale
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.