Finding the Fourth Proportional to 138,634.08, 191,366.86 and 107,946.48
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Solution
The fourth proportional to 138,634.08, 191,366.86 and 107,946.48 is: 149,006.50
Step by Step Solution
- Step 1: Write the proportion equation
138,634.08 : 191,366.86 = 107,946.48 : x - Step 2: Convert to fraction form
138,634.08/191,366.86 = 107,946.48/x - Step 3: Cross multiply
138,634.08x = 191,366.86 × 107,946.48 - Step 4: Simplify right side
138,634.08x = 20,657,378,925.65 - Step 5: Solve for x
x = 20,657,378,925.65/138,634.08 - Step 6: Final answer
x = 149,006.50
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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.