Finding the Fourth Proportional to 99,916.74, 137,946.19 and 65,024.63
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Solution
The fourth proportional to 99,916.74, 137,946.19 and 65,024.63 is: 89,773.75
Step by Step Solution
- Step 1: Write the proportion equation
99,916.74 : 137,946.19 = 65,024.63 : x - Step 2: Convert to fraction form
99,916.74/137,946.19 = 65,024.63/x - Step 3: Cross multiply
99,916.74x = 137,946.19 × 65,024.63 - Step 4: Simplify right side
99,916.74x = 8,969,900,146.96 - Step 5: Solve for x
x = 8,969,900,146.96/99,916.74 - Step 6: Final answer
x = 89,773.75
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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.