Finding the Fourth Proportional to 92,721.90, 138,303.36 and 84,207.99
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Solution
The fourth proportional to 92,721.90, 138,303.36 and 84,207.99 is: 125,604.07
Step by Step Solution
- Step 1: Write the proportion equation
92,721.90 : 138,303.36 = 84,207.99 : x - Step 2: Convert to fraction form
92,721.90/138,303.36 = 84,207.99/x - Step 3: Cross multiply
92,721.90x = 138,303.36 × 84,207.99 - Step 4: Simplify right side
92,721.90x = 11,646,247,955.85 - Step 5: Solve for x
x = 11,646,247,955.85/92,721.90 - Step 6: Final answer
x = 125,604.07
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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.