Finding the Fourth Proportional to 159,292.68, 219,822.24 and 87,671.18
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Solution
The fourth proportional to 159,292.68, 219,822.24 and 87,671.18 is: 120,985.32
Step by Step Solution
- Step 1: Write the proportion equation
159,292.68 : 219,822.24 = 87,671.18 : x - Step 2: Convert to fraction form
159,292.68/219,822.24 = 87,671.18/x - Step 3: Cross multiply
159,292.68x = 219,822.24 × 87,671.18 - Step 4: Simplify right side
159,292.68x = 19,272,075,171.04 - Step 5: Solve for x
x = 19,272,075,171.04/159,292.68 - Step 6: Final answer
x = 120,985.32
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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.