Finding the Fourth Proportional to 128,716,905.70, 193,075,358.55 and 59,629,575.70
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Solution
The fourth proportional to 128,716,905.70, 193,075,358.55 and 59,629,575.70 is: 89,444,363.55
Step by Step Solution
- Step 1: Write the proportion equation
128,716,905.70 : 193,075,358.55 = 59,629,575.70 : x - Step 2: Convert to fraction form
128,716,905.70/193,075,358.55 = 59,629,575.70/x - Step 3: Cross multiply
128,716,905.70x = 193,075,358.55 × 59,629,575.70 - Step 4: Simplify right side
128,716,905.70x = 11,513,001,708,461,868 - Step 5: Solve for x
x = 11,513,001,708,461,868/128,716,905.70 - Step 6: Final answer
x = 89,444,363.55
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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.