Finding the Fourth Proportional to 135,565.29, 187,079.95 and 75,136.05
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Solution
The fourth proportional to 135,565.29, 187,079.95 and 75,136.05 is: 103,687.67
Step by Step Solution
- Step 1: Write the proportion equation
135,565.29 : 187,079.95 = 75,136.05 : x - Step 2: Convert to fraction form
135,565.29/187,079.95 = 75,136.05/x - Step 3: Cross multiply
135,565.29x = 187,079.95 × 75,136.05 - Step 4: Simplify right side
135,565.29x = 14,056,448,477.20 - Step 5: Solve for x
x = 14,056,448,477.20/135,565.29 - Step 6: Final answer
x = 103,687.67
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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.