Finding the Fourth Proportional to 207,933.28, 286,948.12 and 121,875.10
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Solution
The fourth proportional to 207,933.28, 286,948.12 and 121,875.10 is: 168,187.75
Step by Step Solution
- Step 1: Write the proportion equation
207,933.28 : 286,948.12 = 121,875.10 : x - Step 2: Convert to fraction form
207,933.28/286,948.12 = 121,875.10/x - Step 3: Cross multiply
207,933.28x = 286,948.12 × 121,875.10 - Step 4: Simplify right side
207,933.28x = 34,971,830,819.81 - Step 5: Solve for x
x = 34,971,830,819.81/207,933.28 - Step 6: Final answer
x = 168,187.75
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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.