Finding the Fourth Proportional to 138,244,026.88, 190,782,549.30 and 79,506,731.98
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Solution
The fourth proportional to 138,244,026.88, 190,782,549.30 and 79,506,731.98 is: 109,722,621.34
Step by Step Solution
- Step 1: Write the proportion equation
138,244,026.88 : 190,782,549.30 = 79,506,731.98 : x - Step 2: Convert to fraction form
138,244,026.88/190,782,549.30 = 79,506,731.98/x - Step 3: Cross multiply
138,244,026.88x = 190,782,549.30 × 79,506,731.98 - Step 4: Simplify right side
138,244,026.88x = 15,168,497,013,656,238 - Step 5: Solve for x
x = 15,168,497,013,656,238/138,244,026.88 - Step 6: Final answer
x = 109,722,621.34
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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.