Finding the Fourth Proportional to 122,440,134.12, 168,967,385.13 and 67,435,990.62
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Solution
The fourth proportional to 122,440,134.12, 168,967,385.13 and 67,435,990.62 is: 93,061,667.08
Step by Step Solution
- Step 1: Write the proportion equation
122,440,134.12 : 168,967,385.13 = 67,435,990.62 : x - Step 2: Convert to fraction form
122,440,134.12/168,967,385.13 = 67,435,990.62/x - Step 3: Cross multiply
122,440,134.12x = 168,967,385.13 × 67,435,990.62 - Step 4: Simplify right side
122,440,134.12x = 11,394,482,998,712,608 - Step 5: Solve for x
x = 11,394,482,998,712,608/122,440,134.12 - Step 6: Final answer
x = 93,061,667.08
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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.