Finding the Fourth Proportional to 135,178.15, 186,542.15 and 74,746.79
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Solution
The fourth proportional to 135,178.15, 186,542.15 and 74,746.79 is: 103,148.53
Step by Step Solution
- Step 1: Write the proportion equation
135,178.15 : 186,542.15 = 74,746.79 : x - Step 2: Convert to fraction form
135,178.15/186,542.15 = 74,746.79/x - Step 3: Cross multiply
135,178.15x = 186,542.15 × 74,746.79 - Step 4: Simplify right side
135,178.15x = 13,943,426,912.20 - Step 5: Solve for x
x = 13,943,426,912.20/135,178.15 - Step 6: Final answer
x = 103,148.53
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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.