Finding the Fourth Proportional to 139,345.25, 192,293.27 and 75,681.68
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Solution
The fourth proportional to 139,345.25, 192,293.27 and 75,681.68 is: 104,438.99
Step by Step Solution
- Step 1: Write the proportion equation
139,345.25 : 192,293.27 = 75,681.68 : x - Step 2: Convert to fraction form
139,345.25/192,293.27 = 75,681.68/x - Step 3: Cross multiply
139,345.25x = 192,293.27 × 75,681.68 - Step 4: Simplify right side
139,345.25x = 14,553,076,386.42 - Step 5: Solve for x
x = 14,553,076,386.42/139,345.25 - Step 6: Final answer
x = 104,438.99
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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.