Finding the Fourth Proportional to 138,460.80, 191,075.76 and 74,798.60
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Solution
The fourth proportional to 138,460.80, 191,075.76 and 74,798.60 is: 103,221.99
Step by Step Solution
- Step 1: Write the proportion equation
138,460.80 : 191,075.76 = 74,798.60 : x - Step 2: Convert to fraction form
138,460.80/191,075.76 = 74,798.60/x - Step 3: Cross multiply
138,460.80x = 191,075.76 × 74,798.60 - Step 4: Simplify right side
138,460.80x = 14,292,199,341.94 - Step 5: Solve for x
x = 14,292,199,341.94/138,460.80 - Step 6: Final answer
x = 103,221.99
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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.