Finding the Fourth Proportional to 157,272,604.16, 217,037,207.04 and 87,662,405.12
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Solution
The fourth proportional to 157,272,604.16, 217,037,207.04 and 87,662,405.12 is: 120,974,683.87
Step by Step Solution
- Step 1: Write the proportion equation
157,272,604.16 : 217,037,207.04 = 87,662,405.12 : x - Step 2: Convert to fraction form
157,272,604.16/217,037,207.04 = 87,662,405.12/x - Step 3: Cross multiply
157,272,604.16x = 217,037,207.04 × 87,662,405.12 - Step 4: Simplify right side
157,272,604.16x = 19,026,003,569,653,796 - Step 5: Solve for x
x = 19,026,003,569,653,796/157,272,604.16 - Step 6: Final answer
x = 120,974,683.87
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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.