Finding the Fourth Proportional to 103,439,365.74, 142,882,583.86 and 76,670,961.84
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Solution
The fourth proportional to 103,439,365.74, 142,882,583.86 and 76,670,961.84 is: 105,906,924.86
Step by Step Solution
- Step 1: Write the proportion equation
103,439,365.74 : 142,882,583.86 = 76,670,961.84 : x - Step 2: Convert to fraction form
103,439,365.74/142,882,583.86 = 76,670,961.84/x - Step 3: Cross multiply
103,439,365.74x = 142,882,583.86 × 76,670,961.84 - Step 4: Simplify right side
103,439,365.74x = 10,954,945,134,730,662 - Step 5: Solve for x
x = 10,954,945,134,730,662/103,439,365.74 - Step 6: Final answer
x = 105,906,924.86
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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.