Finding the Fourth Proportional to 139,713.28, 192,700.35 and 88,681.68
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Solution
The fourth proportional to 139,713.28, 192,700.35 and 88,681.68 is: 122,314.72
Step by Step Solution
- Step 1: Write the proportion equation
139,713.28 : 192,700.35 = 88,681.68 : x - Step 2: Convert to fraction form
139,713.28/192,700.35 = 88,681.68/x - Step 3: Cross multiply
139,713.28x = 192,700.35 × 88,681.68 - Step 4: Simplify right side
139,713.28x = 17,088,990,774.59 - Step 5: Solve for x
x = 17,088,990,774.59/139,713.28 - Step 6: Final answer
x = 122,314.72
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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.