Finding the Fourth Proportional to 122,896.29, 169,678.44 and 77,024.88
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Solution
The fourth proportional to 122,896.29, 169,678.44 and 77,024.88 is: 106,345.45
Step by Step Solution
- Step 1: Write the proportion equation
122,896.29 : 169,678.44 = 77,024.88 : x - Step 2: Convert to fraction form
122,896.29/169,678.44 = 77,024.88/x - Step 3: Cross multiply
122,896.29x = 169,678.44 × 77,024.88 - Step 4: Simplify right side
122,896.29x = 13,069,461,479.59 - Step 5: Solve for x
x = 13,069,461,479.59/122,896.29 - Step 6: Final answer
x = 106,345.45
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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.