Finding the Fourth Proportional to 102,421,311.84, 141,358,136.31 and 76,134,247.11
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Solution
The fourth proportional to 102,421,311.84, 141,358,136.31 and 76,134,247.11 is: 105,077,694.16
Step by Step Solution
- Step 1: Write the proportion equation
102,421,311.84 : 141,358,136.31 = 76,134,247.11 : x - Step 2: Convert to fraction form
102,421,311.84/141,358,136.31 = 76,134,247.11/x - Step 3: Cross multiply
102,421,311.84x = 141,358,136.31 × 76,134,247.11 - Step 4: Simplify right side
102,421,311.84x = 10,762,195,280,834,604 - Step 5: Solve for x
x = 10,762,195,280,834,604/102,421,311.84 - Step 6: Final answer
x = 105,077,694.16
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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.