Finding the Fourth Proportional to 155,709.30, 214,878.84 and 84,089.33
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Solution
The fourth proportional to 155,709.30, 214,878.84 and 84,089.33 is: 116,043.28
Step by Step Solution
- Step 1: Write the proportion equation
155,709.30 : 214,878.84 = 84,089.33 : x - Step 2: Convert to fraction form
155,709.30/214,878.84 = 84,089.33/x - Step 3: Cross multiply
155,709.30x = 214,878.84 × 84,089.33 - Step 4: Simplify right side
155,709.30x = 18,069,017,686.78 - Step 5: Solve for x
x = 18,069,017,686.78/155,709.30 - Step 6: Final answer
x = 116,043.28
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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.