Finding the Fourth Proportional to 155,121.99, 214,045.04 and 87,125.95
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Solution
The fourth proportional to 155,121.99, 214,045.04 and 87,125.95 is: 120,220.71
Step by Step Solution
- Step 1: Write the proportion equation
155,121.99 : 214,045.04 = 87,125.95 : x - Step 2: Convert to fraction form
155,121.99/214,045.04 = 87,125.95/x - Step 3: Cross multiply
155,121.99x = 214,045.04 × 87,125.95 - Step 4: Simplify right side
155,121.99x = 18,648,875,946.93 - Step 5: Solve for x
x = 18,648,875,946.93/155,121.99 - Step 6: Final answer
x = 120,220.71
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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.