Finding the Fourth Proportional to 135,339.19, 186,763.31 and 74,909.95
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Solution
The fourth proportional to 135,339.19, 186,763.31 and 74,909.95 is: 103,373.09
Step by Step Solution
- Step 1: Write the proportion equation
135,339.19 : 186,763.31 = 74,909.95 : x - Step 2: Convert to fraction form
135,339.19/186,763.31 = 74,909.95/x - Step 3: Cross multiply
135,339.19x = 186,763.31 × 74,909.95 - Step 4: Simplify right side
135,339.19x = 13,990,429,280.12 - Step 5: Solve for x
x = 13,990,429,280.12/135,339.19 - Step 6: Final answer
x = 103,373.09
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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.