Finding the Fourth Proportional to 128,985.42, 192,147.87 and 125,068.26
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Solution
The fourth proportional to 128,985.42, 192,147.87 and 125,068.26 is: 186,312.53
Step by Step Solution
- Step 1: Write the proportion equation
128,985.42 : 192,147.87 = 125,068.26 : x - Step 2: Convert to fraction form
128,985.42/192,147.87 = 125,068.26/x - Step 3: Cross multiply
128,985.42x = 192,147.87 × 125,068.26 - Step 4: Simplify right side
128,985.42x = 24,031,599,763.61 - Step 5: Solve for x
x = 24,031,599,763.61/128,985.42 - Step 6: Final answer
x = 186,312.53
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.