Finding the Fourth Proportional to 153,840.06, 212,299.17 and 86,772.06
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Solution
The fourth proportional to 153,840.06, 212,299.17 and 86,772.06 is: 119,745.38
Step by Step Solution
- Step 1: Write the proportion equation
153,840.06 : 212,299.17 = 86,772.06 : x - Step 2: Convert to fraction form
153,840.06/212,299.17 = 86,772.06/x - Step 3: Cross multiply
153,840.06x = 212,299.17 × 86,772.06 - Step 4: Simplify right side
153,840.06x = 18,421,636,317.19 - Step 5: Solve for x
x = 18,421,636,317.19/153,840.06 - Step 6: Final answer
x = 119,745.38
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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.