Finding the Fourth Proportional to 128,637.27, 191,398.93 and 125,423.19
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Solution
The fourth proportional to 128,637.27, 191,398.93 and 125,423.19 is: 186,616.71
Step by Step Solution
- Step 1: Write the proportion equation
128,637.27 : 191,398.93 = 125,423.19 : x - Step 2: Convert to fraction form
128,637.27/191,398.93 = 125,423.19/x - Step 3: Cross multiply
128,637.27x = 191,398.93 × 125,423.19 - Step 4: Simplify right side
128,637.27x = 24,005,864,049.63 - Step 5: Solve for x
x = 24,005,864,049.63/128,637.27 - Step 6: Final answer
x = 186,616.71
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.