Finding the Fourth Proportional to 122,581.24, 169,175.80 and 74,209.80
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Solution
The fourth proportional to 122,581.24, 169,175.80 and 74,209.80 is: 102,417.81
Step by Step Solution
- Step 1: Write the proportion equation
122,581.24 : 169,175.80 = 74,209.80 : x - Step 2: Convert to fraction form
122,581.24/169,175.80 = 74,209.80/x - Step 3: Cross multiply
122,581.24x = 169,175.80 × 74,209.80 - Step 4: Simplify right side
122,581.24x = 12,554,502,282.84 - Step 5: Solve for x
x = 12,554,502,282.84/122,581.24 - Step 6: Final answer
x = 102,417.81
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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.