Finding the Fourth Proportional to 142,855.64, 197,113.01 and 84,701.63
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Solution
The fourth proportional to 142,855.64, 197,113.01 and 84,701.63 is: 116,871.78
Step by Step Solution
- Step 1: Write the proportion equation
142,855.64 : 197,113.01 = 84,701.63 : x - Step 2: Convert to fraction form
142,855.64/197,113.01 = 84,701.63/x - Step 3: Cross multiply
142,855.64x = 197,113.01 × 84,701.63 - Step 4: Simplify right side
142,855.64x = 16,695,791,832.13 - Step 5: Solve for x
x = 16,695,791,832.13/142,855.64 - Step 6: Final answer
x = 116,871.78
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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.