Finding the Fourth Proportional to 135,602.42, 187,136.91 and 78,259.28
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Solution
The fourth proportional to 135,602.42, 187,136.91 and 78,259.28 is: 108,001.02
Step by Step Solution
- Step 1: Write the proportion equation
135,602.42 : 187,136.91 = 78,259.28 : x - Step 2: Convert to fraction form
135,602.42/187,136.91 = 78,259.28/x - Step 3: Cross multiply
135,602.42x = 187,136.91 × 78,259.28 - Step 4: Simplify right side
135,602.42x = 14,645,199,838.02 - Step 5: Solve for x
x = 14,645,199,838.02/135,602.42 - Step 6: Final answer
x = 108,001.02
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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.