Finding the Fourth Proportional to 128,477,864.10, 177,302,578.41 and 69,742,936.74
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Solution
The fourth proportional to 128,477,864.10, 177,302,578.41 and 69,742,936.74 is: 96,246,949.59
Step by Step Solution
- Step 1: Write the proportion equation
128,477,864.10 : 177,302,578.41 = 69,742,936.74 : x - Step 2: Convert to fraction form
128,477,864.10/177,302,578.41 = 69,742,936.74/x - Step 3: Cross multiply
128,477,864.10x = 177,302,578.41 × 69,742,936.74 - Step 4: Simplify right side
128,477,864.10x = 12,365,602,509,887,518 - Step 5: Solve for x
x = 12,365,602,509,887,518/128,477,864.10 - Step 6: Final answer
x = 96,246,949.59
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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.