Finding the Fourth Proportional to 135,712.06, 187,283.68 and 74,457.84
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Solution
The fourth proportional to 135,712.06, 187,283.68 and 74,457.84 is: 102,752.39
Step by Step Solution
- Step 1: Write the proportion equation
135,712.06 : 187,283.68 = 74,457.84 : x - Step 2: Convert to fraction form
135,712.06/187,283.68 = 74,457.84/x - Step 3: Cross multiply
135,712.06x = 187,283.68 × 74,457.84 - Step 4: Simplify right side
135,712.06x = 13,944,738,280.05 - Step 5: Solve for x
x = 13,944,738,280.05/135,712.06 - Step 6: Final answer
x = 102,752.39
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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.