Finding the Fourth Proportional to 129,089.58, 193,689.09 and 118,756.14
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Solution
The fourth proportional to 129,089.58, 193,689.09 and 118,756.14 is: 178,184.55
Step by Step Solution
- Step 1: Write the proportion equation
129,089.58 : 193,689.09 = 118,756.14 : x - Step 2: Convert to fraction form
129,089.58/193,689.09 = 118,756.14/x - Step 3: Cross multiply
129,089.58x = 193,689.09 × 118,756.14 - Step 4: Simplify right side
129,089.58x = 23,001,768,688.51 - Step 5: Solve for x
x = 23,001,768,688.51/129,089.58 - Step 6: Final answer
x = 178,184.55
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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.