Finding the Fourth Proportional to 122,907.78, 169,612.56 and 69,210.14
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Solution
The fourth proportional to 122,907.78, 169,612.56 and 69,210.14 is: 95,509.89
Step by Step Solution
- Step 1: Write the proportion equation
122,907.78 : 169,612.56 = 69,210.14 : x - Step 2: Convert to fraction form
122,907.78/169,612.56 = 69,210.14/x - Step 3: Cross multiply
122,907.78x = 169,612.56 × 69,210.14 - Step 4: Simplify right side
122,907.78x = 11,738,908,175.30 - Step 5: Solve for x
x = 11,738,908,175.30/122,907.78 - Step 6: Final answer
x = 95,509.89
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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.