Finding the Fourth Proportional to 137,889.02, 190,266.12 and 77,448.08
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Solution
The fourth proportional to 137,889.02, 190,266.12 and 77,448.08 is: 106,866.71
Step by Step Solution
- Step 1: Write the proportion equation
137,889.02 : 190,266.12 = 77,448.08 : x - Step 2: Convert to fraction form
137,889.02/190,266.12 = 77,448.08/x - Step 3: Cross multiply
137,889.02x = 190,266.12 × 77,448.08 - Step 4: Simplify right side
137,889.02x = 14,735,745,683.05 - Step 5: Solve for x
x = 14,735,745,683.05/137,889.02 - Step 6: Final answer
x = 106,866.71
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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.