Finding the Fourth Proportional to 128,158,862.85, 176,860,079.96 and 69,421,527.96
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Solution
The fourth proportional to 128,158,862.85, 176,860,079.96 and 69,421,527.96 is: 95,802,168.59
Step by Step Solution
- Step 1: Write the proportion equation
128,158,862.85 : 176,860,079.96 = 69,421,527.96 : x - Step 2: Convert to fraction form
128,158,862.85/176,860,079.96 = 69,421,527.96/x - Step 3: Cross multiply
128,158,862.85x = 176,860,079.96 × 69,421,527.96 - Step 4: Simplify right side
128,158,862.85x = 12,277,896,985,603,868 - Step 5: Solve for x
x = 12,277,896,985,603,868/128,158,862.85 - Step 6: Final answer
x = 95,802,168.59
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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.