Finding the Fourth Proportional to 152,638.70, 210,638.26 and 84,644.70
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Solution
The fourth proportional to 152,638.70, 210,638.26 and 84,644.70 is: 116,807.94
Step by Step Solution
- Step 1: Write the proportion equation
152,638.70 : 210,638.26 = 84,644.70 : x - Step 2: Convert to fraction form
152,638.70/210,638.26 = 84,644.70/x - Step 3: Cross multiply
152,638.70x = 210,638.26 × 84,644.70 - Step 4: Simplify right side
152,638.70x = 17,829,411,642.13 - Step 5: Solve for x
x = 17,829,411,642.13/152,638.70 - Step 6: Final answer
x = 116,807.94
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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.