Finding the Fourth Proportional to 153,793.74, 212,235.39 and 86,725.74
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Solution
The fourth proportional to 153,793.74, 212,235.39 and 86,725.74 is: 119,681.54
Step by Step Solution
- Step 1: Write the proportion equation
153,793.74 : 212,235.39 = 86,725.74 : x - Step 2: Convert to fraction form
153,793.74/212,235.39 = 86,725.74/x - Step 3: Cross multiply
153,793.74x = 212,235.39 × 86,725.74 - Step 4: Simplify right side
153,793.74x = 18,406,271,251.94 - Step 5: Solve for x
x = 18,406,271,251.94/153,793.74 - Step 6: Final answer
x = 119,681.54
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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.