Finding the Fourth Proportional to 161,884.90, 242,827.35 and 128,423.80
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Solution
The fourth proportional to 161,884.90, 242,827.35 and 128,423.80 is: 192,635.70
Step by Step Solution
- Step 1: Write the proportion equation
161,884.90 : 242,827.35 = 128,423.80 : x - Step 2: Convert to fraction form
161,884.90/242,827.35 = 128,423.80/x - Step 3: Cross multiply
161,884.90x = 242,827.35 × 128,423.80 - Step 4: Simplify right side
161,884.90x = 31,184,811,030.93 - Step 5: Solve for x
x = 31,184,811,030.93/161,884.90 - Step 6: Final answer
x = 192,635.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.