Finding the Fourth Proportional to 126,688.47, 174,830.07 and 69,327.80
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Solution
The fourth proportional to 126,688.47, 174,830.07 and 69,327.80 is: 95,672.35
Step by Step Solution
- Step 1: Write the proportion equation
126,688.47 : 174,830.07 = 69,327.80 : x - Step 2: Convert to fraction form
126,688.47/174,830.07 = 69,327.80/x - Step 3: Cross multiply
126,688.47x = 174,830.07 × 69,327.80 - Step 4: Simplify right side
126,688.47x = 12,120,584,126.95 - Step 5: Solve for x
x = 12,120,584,126.95/126,688.47 - Step 6: Final answer
x = 95,672.35
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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.