Finding the Fourth Proportional to 128,716,909.70, 193,075,364.55 and 59,629,579.70
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Solution
The fourth proportional to 128,716,909.70, 193,075,364.55 and 59,629,579.70 is: 89,444,369.55
Step by Step Solution
- Step 1: Write the proportion equation
128,716,909.70 : 193,075,364.55 = 59,629,579.70 : x - Step 2: Convert to fraction form
128,716,909.70/193,075,364.55 = 59,629,579.70/x - Step 3: Cross multiply
128,716,909.70x = 193,075,364.55 × 59,629,579.70 - Step 4: Simplify right side
128,716,909.70x = 11,513,002,838,540,780 - Step 5: Solve for x
x = 11,513,002,838,540,780/128,716,909.70 - Step 6: Final answer
x = 89,444,369.55
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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.