Finding the Fourth Proportional to 157,807,678.05, 217,781,321.28 and 88,193,056.88
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Solution
The fourth proportional to 157,807,678.05, 217,781,321.28 and 88,193,056.88 is: 121,710,177.18
Step by Step Solution
- Step 1: Write the proportion equation
157,807,678.05 : 217,781,321.28 = 88,193,056.88 : x - Step 2: Convert to fraction form
157,807,678.05/217,781,321.28 = 88,193,056.88/x - Step 3: Cross multiply
157,807,678.05x = 217,781,321.28 × 88,193,056.88 - Step 4: Simplify right side
157,807,678.05x = 19,206,800,455,593,048 - Step 5: Solve for x
x = 19,206,800,455,593,048/157,807,678.05 - Step 6: Final answer
x = 121,710,177.18
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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.