Finding the Fourth Proportional to 187,136.72, 280,202.06 and 142,551.08
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Solution
The fourth proportional to 187,136.72, 280,202.06 and 142,551.08 is: 213,443.45
Step by Step Solution
- Step 1: Write the proportion equation
187,136.72 : 280,202.06 = 142,551.08 : x - Step 2: Convert to fraction form
187,136.72/280,202.06 = 142,551.08/x - Step 3: Cross multiply
187,136.72x = 280,202.06 × 142,551.08 - Step 4: Simplify right side
187,136.72x = 39,943,106,271.22 - Step 5: Solve for x
x = 39,943,106,271.22/187,136.72 - Step 6: Final answer
x = 213,443.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.