Finding the Fourth Proportional to 103,169.07, 142,398.60 and 62,904.99
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Solution
The fourth proportional to 103,169.07, 142,398.60 and 62,904.99 is: 86,824.30
Step by Step Solution
- Step 1: Write the proportion equation
103,169.07 : 142,398.60 = 62,904.99 : x - Step 2: Convert to fraction form
103,169.07/142,398.60 = 62,904.99/x - Step 3: Cross multiply
103,169.07x = 142,398.60 × 62,904.99 - Step 4: Simplify right side
103,169.07x = 8,957,582,509.01 - Step 5: Solve for x
x = 8,957,582,509.01/103,169.07 - Step 6: Final answer
x = 86,824.30
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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.