Finding the Fourth Proportional to 121,135.61, 181,503.46 and 70,392.19
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Solution
The fourth proportional to 121,135.61, 181,503.46 and 70,392.19 is: 105,472.09
Step by Step Solution
- Step 1: Write the proportion equation
121,135.61 : 181,503.46 = 70,392.19 : x - Step 2: Convert to fraction form
121,135.61/181,503.46 = 70,392.19/x - Step 3: Cross multiply
121,135.61x = 181,503.46 × 70,392.19 - Step 4: Simplify right side
121,135.61x = 12,776,426,041.98 - Step 5: Solve for x
x = 12,776,426,041.98/121,135.61 - Step 6: Final answer
x = 105,472.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.