Finding the Fourth Proportional to 121,926.24, 168,167.76 and 86,078.88
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Solution
The fourth proportional to 121,926.24, 168,167.76 and 86,078.88 is: 118,725.00
Step by Step Solution
- Step 1: Write the proportion equation
121,926.24 : 168,167.76 = 86,078.88 : x - Step 2: Convert to fraction form
121,926.24/168,167.76 = 86,078.88/x - Step 3: Cross multiply
121,926.24x = 168,167.76 × 86,078.88 - Step 4: Simplify right side
121,926.24x = 14,475,692,432.91 - Step 5: Solve for x
x = 14,475,692,432.91/121,926.24 - Step 6: Final answer
x = 118,725.00
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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.