Finding the Fourth Proportional to 157,906,544.58, 217,896,407.64 and 87,340,636.13
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Solution
The fourth proportional to 157,906,544.58, 217,896,407.64 and 87,340,636.13 is: 120,521,989.15
Step by Step Solution
- Step 1: Write the proportion equation
157,906,544.58 : 217,896,407.64 = 87,340,636.13 : x - Step 2: Convert to fraction form
157,906,544.58/217,896,407.64 = 87,340,636.13/x - Step 3: Cross multiply
157,906,544.58x = 217,896,407.64 × 87,340,636.13 - Step 4: Simplify right side
157,906,544.58x = 19,031,210,852,629,908 - Step 5: Solve for x
x = 19,031,210,852,629,908/157,906,544.58 - Step 6: Final answer
x = 120,521,989.15
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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.