Finding the Fourth Proportional to 91,806,146.20, 137,709,219.30 and 79,848,723.70
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Solution
The fourth proportional to 91,806,146.20, 137,709,219.30 and 79,848,723.70 is: 119,773,085.55
Step by Step Solution
- Step 1: Write the proportion equation
91,806,146.20 : 137,709,219.30 = 79,848,723.70 : x - Step 2: Convert to fraction form
91,806,146.20/137,709,219.30 = 79,848,723.70/x - Step 3: Cross multiply
91,806,146.20x = 137,709,219.30 × 79,848,723.70 - Step 4: Simplify right side
91,806,146.20x = 10,995,905,402,828,408 - Step 5: Solve for x
x = 10,995,905,402,828,408/91,806,146.20 - Step 6: Final answer
x = 119,773,085.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.