Finding the Fourth Proportional to 133,113.84, 183,704.58 and 72,690.12
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Solution
The fourth proportional to 133,113.84, 183,704.58 and 72,690.12 is: 100,316.45
Step by Step Solution
- Step 1: Write the proportion equation
133,113.84 : 183,704.58 = 72,690.12 : x - Step 2: Convert to fraction form
133,113.84/183,704.58 = 72,690.12/x - Step 3: Cross multiply
133,113.84x = 183,704.58 × 72,690.12 - Step 4: Simplify right side
133,113.84x = 13,353,507,964.75 - Step 5: Solve for x
x = 13,353,507,964.75/133,113.84 - Step 6: Final answer
x = 100,316.45
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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.