Finding the Fourth Proportional to 122,721.42, 169,352.20 and 69,005.06
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Solution
The fourth proportional to 122,721.42, 169,352.20 and 69,005.06 is: 95,225.09
Step by Step Solution
- Step 1: Write the proportion equation
122,721.42 : 169,352.20 = 69,005.06 : x - Step 2: Convert to fraction form
122,721.42/169,352.20 = 69,005.06/x - Step 3: Cross multiply
122,721.42x = 169,352.20 × 69,005.06 - Step 4: Simplify right side
122,721.42x = 11,686,158,722.13 - Step 5: Solve for x
x = 11,686,158,722.13/122,721.42 - Step 6: Final answer
x = 95,225.09
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1.5x scale
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.