Finding the Fourth Proportional to 128,634,028.95, 177,516,081.12 and 69,896,693.87
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Solution
The fourth proportional to 128,634,028.95, 177,516,081.12 and 69,896,693.87 is: 96,458,046.76
Step by Step Solution
- Step 1: Write the proportion equation
128,634,028.95 : 177,516,081.12 = 69,896,693.87 : x - Step 2: Convert to fraction form
128,634,028.95/177,516,081.12 = 69,896,693.87/x - Step 3: Cross multiply
128,634,028.95x = 177,516,081.12 × 69,896,693.87 - Step 4: Simplify right side
128,634,028.95x = 12,407,787,179,046,728 - Step 5: Solve for x
x = 12,407,787,179,046,728/128,634,028.95 - Step 6: Final answer
x = 96,458,046.76
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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.