Finding the Fourth Proportional to 135,214.68, 186,594.66 and 74,780.58
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Solution
The fourth proportional to 135,214.68, 186,594.66 and 74,780.58 is: 103,196.32
Step by Step Solution
- Step 1: Write the proportion equation
135,214.68 : 186,594.66 = 74,780.58 : x - Step 2: Convert to fraction form
135,214.68/186,594.66 = 74,780.58/x - Step 3: Cross multiply
135,214.68x = 186,594.66 × 74,780.58 - Step 4: Simplify right side
135,214.68x = 13,953,656,899.70 - Step 5: Solve for x
x = 13,953,656,899.70/135,214.68 - Step 6: Final answer
x = 103,196.32
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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.