Finding the Fourth Proportional to 122,357.19, 168,925.32 and 77,073.99
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Solution
The fourth proportional to 122,357.19, 168,925.32 and 77,073.99 is: 106,407.71
Step by Step Solution
- Step 1: Write the proportion equation
122,357.19 : 168,925.32 = 77,073.99 : x - Step 2: Convert to fraction form
122,357.19/168,925.32 = 77,073.99/x - Step 3: Cross multiply
122,357.19x = 168,925.32 × 77,073.99 - Step 4: Simplify right side
122,357.19x = 13,019,748,424.43 - Step 5: Solve for x
x = 13,019,748,424.43/122,357.19 - Step 6: Final answer
x = 106,407.71
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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.