Finding the Fourth Proportional to 162,565.65, 243,848.84 and 87,721.07
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Solution
The fourth proportional to 162,565.65, 243,848.84 and 87,721.07 is: 131,581.79
Step by Step Solution
- Step 1: Write the proportion equation
162,565.65 : 243,848.84 = 87,721.07 : x - Step 2: Convert to fraction form
162,565.65/243,848.84 = 87,721.07/x - Step 3: Cross multiply
162,565.65x = 243,848.84 × 87,721.07 - Step 4: Simplify right side
162,565.65x = 21,390,679,505.21 - Step 5: Solve for x
x = 21,390,679,505.21/162,565.65 - Step 6: Final answer
x = 131,581.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.