Finding the Fourth Proportional to 156,235.91, 215,605.49 and 84,615.93
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Solution
The fourth proportional to 156,235.91, 215,605.49 and 84,615.93 is: 116,769.95
Step by Step Solution
- Step 1: Write the proportion equation
156,235.91 : 215,605.49 = 84,615.93 : x - Step 2: Convert to fraction form
156,235.91/215,605.49 = 84,615.93/x - Step 3: Cross multiply
156,235.91x = 215,605.49 × 84,615.93 - Step 4: Simplify right side
156,235.91x = 18,243,658,626.38 - Step 5: Solve for x
x = 18,243,658,626.38/156,235.91 - Step 6: Final answer
x = 116,769.95
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1.5x scale
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.