Finding the Fourth Proportional to 135,159.59, 186,503.95 and 74,722.07
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Solution
The fourth proportional to 135,159.59, 186,503.95 and 74,722.07 is: 103,107.45
Step by Step Solution
- Step 1: Write the proportion equation
135,159.59 : 186,503.95 = 74,722.07 : x - Step 2: Convert to fraction form
135,159.59/186,503.95 = 74,722.07/x - Step 3: Cross multiply
135,159.59x = 186,503.95 × 74,722.07 - Step 4: Simplify right side
135,159.59x = 13,935,961,207.18 - Step 5: Solve for x
x = 13,935,961,207.18/135,159.59 - Step 6: Final answer
x = 103,107.45
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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.