Finding the Fourth Proportional to 121,512,031.55, 167,687,026.95 and 65,757,438.03
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Solution
The fourth proportional to 121,512,031.55, 167,687,026.95 and 65,757,438.03 is: 90,745,493.61
Step by Step Solution
- Step 1: Write the proportion equation
121,512,031.55 : 167,687,026.95 = 65,757,438.03 : x - Step 2: Convert to fraction form
121,512,031.55/167,687,026.95 = 65,757,438.03/x - Step 3: Cross multiply
121,512,031.55x = 167,687,026.95 × 65,757,438.03 - Step 4: Simplify right side
121,512,031.55x = 11,026,669,283,099,564 - Step 5: Solve for x
x = 11,026,669,283,099,564/121,512,031.55 - Step 6: Final answer
x = 90,745,493.61
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1.5x scale
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.