Finding the Fourth Proportional to 157,000.84, 216,551.34 and 103,268.68
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Solution
The fourth proportional to 157,000.84, 216,551.34 and 103,268.68 is: 142,438.54
Step by Step Solution
- Step 1: Write the proportion equation
157,000.84 : 216,551.34 = 103,268.68 : x - Step 2: Convert to fraction form
157,000.84/216,551.34 = 103,268.68/x - Step 3: Cross multiply
157,000.84x = 216,551.34 × 103,268.68 - Step 4: Simplify right side
157,000.84x = 22,362,971,034.03 - Step 5: Solve for x
x = 22,362,971,034.03/157,000.84 - Step 6: Final answer
x = 142,438.54
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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.