Finding the Fourth Proportional to 140,693.84, 194,157.47 and 77,031.62
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Solution
The fourth proportional to 140,693.84, 194,157.47 and 77,031.62 is: 106,303.62
Step by Step Solution
- Step 1: Write the proportion equation
140,693.84 : 194,157.47 = 77,031.62 : x - Step 2: Convert to fraction form
140,693.84/194,157.47 = 77,031.62/x - Step 3: Cross multiply
140,693.84x = 194,157.47 × 77,031.62 - Step 4: Simplify right side
140,693.84x = 14,956,264,064.04 - Step 5: Solve for x
x = 14,956,264,064.04/140,693.84 - Step 6: Final answer
x = 106,303.62
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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.