Finding the Fourth Proportional to 118,283.04, 163,408.65 and 77,543.96
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Solution
The fourth proportional to 118,283.04, 163,408.65 and 77,543.96 is: 107,127.39
Step by Step Solution
- Step 1: Write the proportion equation
118,283.04 : 163,408.65 = 77,543.96 : x - Step 2: Convert to fraction form
118,283.04/163,408.65 = 77,543.96/x - Step 3: Cross multiply
118,283.04x = 163,408.65 × 77,543.96 - Step 4: Simplify right side
118,283.04x = 12,671,353,716.24 - Step 5: Solve for x
x = 12,671,353,716.24/118,283.04 - Step 6: Final answer
x = 107,127.39
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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.