Finding the Fourth Proportional to 122,168,901.34, 168,647,430.27 and 72,625,313.98
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Solution
The fourth proportional to 122,168,901.34, 168,647,430.27 and 72,625,313.98 is: 100,255,240.42
Step by Step Solution
- Step 1: Write the proportion equation
122,168,901.34 : 168,647,430.27 = 72,625,313.98 : x - Step 2: Convert to fraction form
122,168,901.34/168,647,430.27 = 72,625,313.98/x - Step 3: Cross multiply
122,168,901.34x = 168,647,430.27 × 72,625,313.98 - Step 4: Simplify right side
122,168,901.34x = 12,248,072,575,278,908 - Step 5: Solve for x
x = 12,248,072,575,278,908/122,168,901.34 - Step 6: Final answer
x = 100,255,240.42
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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.