Finding the Fourth Proportional to 158,581.40, 218,848.64 and 86,963.99
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Solution
The fourth proportional to 158,581.40, 218,848.64 and 86,963.99 is: 120,013.76
Step by Step Solution
- Step 1: Write the proportion equation
158,581.40 : 218,848.64 = 86,963.99 : x - Step 2: Convert to fraction form
158,581.40/218,848.64 = 86,963.99/x - Step 3: Cross multiply
158,581.40x = 218,848.64 × 86,963.99 - Step 4: Simplify right side
158,581.40x = 19,031,949,411.41 - Step 5: Solve for x
x = 19,031,949,411.41/158,581.40 - Step 6: Final answer
x = 120,013.76
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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.