Finding the Fourth Proportional to 123,358.34, 170,237.84 and 74,943.79
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Solution
The fourth proportional to 123,358.34, 170,237.84 and 74,943.79 is: 103,424.45
Step by Step Solution
- Step 1: Write the proportion equation
123,358.34 : 170,237.84 = 74,943.79 : x - Step 2: Convert to fraction form
123,358.34/170,237.84 = 74,943.79/x - Step 3: Cross multiply
123,358.34x = 170,237.84 × 74,943.79 - Step 4: Simplify right side
123,358.34x = 12,758,268,931.01 - Step 5: Solve for x
x = 12,758,268,931.01/123,358.34 - Step 6: Final answer
x = 103,424.45
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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.