Finding the Fourth Proportional to 112,875.16, 169,340.94 and 79,660.06
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Solution
The fourth proportional to 112,875.16, 169,340.94 and 79,660.06 is: 119,509.99
Step by Step Solution
- Step 1: Write the proportion equation
112,875.16 : 169,340.94 = 79,660.06 : x - Step 2: Convert to fraction form
112,875.16/169,340.94 = 79,660.06/x - Step 3: Cross multiply
112,875.16x = 169,340.94 × 79,660.06 - Step 4: Simplify right side
112,875.16x = 13,489,709,440.86 - Step 5: Solve for x
x = 13,489,709,440.86/112,875.16 - Step 6: Final answer
x = 119,509.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.