Finding the Fourth Proportional to 122,461.13, 169,076.06 and 74,742.14
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Solution
The fourth proportional to 122,461.13, 169,076.06 and 74,742.14 is: 103,192.79
Step by Step Solution
- Step 1: Write the proportion equation
122,461.13 : 169,076.06 = 74,742.14 : x - Step 2: Convert to fraction form
122,461.13/169,076.06 = 74,742.14/x - Step 3: Cross multiply
122,461.13x = 169,076.06 × 74,742.14 - Step 4: Simplify right side
122,461.13x = 12,637,105,328.08 - Step 5: Solve for x
x = 12,637,105,328.08/122,461.13 - Step 6: Final answer
x = 103,192.79
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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.