Finding the Fourth Proportional to 153,816.24, 212,305.08 and 86,787.12
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Solution
The fourth proportional to 153,816.24, 212,305.08 and 86,787.12 is: 119,788.04
Step by Step Solution
- Step 1: Write the proportion equation
153,816.24 : 212,305.08 = 86,787.12 : x - Step 2: Convert to fraction form
153,816.24/212,305.08 = 86,787.12/x - Step 3: Cross multiply
153,816.24x = 212,305.08 × 86,787.12 - Step 4: Simplify right side
153,816.24x = 18,425,346,454.57 - Step 5: Solve for x
x = 18,425,346,454.57/153,816.24 - Step 6: Final answer
x = 119,788.04
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1.5x scale
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.