Finding the Fourth Proportional to 118,421.68, 163,531.04 and 76,054.02
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Solution
The fourth proportional to 118,421.68, 163,531.04 and 76,054.02 is: 105,024.63
Step by Step Solution
- Step 1: Write the proportion equation
118,421.68 : 163,531.04 = 76,054.02 : x - Step 2: Convert to fraction form
118,421.68/163,531.04 = 76,054.02/x - Step 3: Cross multiply
118,421.68x = 163,531.04 × 76,054.02 - Step 4: Simplify right side
118,421.68x = 12,437,192,986.78 - Step 5: Solve for x
x = 12,437,192,986.78/118,421.68 - Step 6: Final answer
x = 105,024.63
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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.