Finding the Fourth Proportional to 139,871.48, 193,024.80 and 76,209.26
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Solution
The fourth proportional to 139,871.48, 193,024.80 and 76,209.26 is: 105,169.95
Step by Step Solution
- Step 1: Write the proportion equation
139,871.48 : 193,024.80 = 76,209.26 : x - Step 2: Convert to fraction form
139,871.48/193,024.80 = 76,209.26/x - Step 3: Cross multiply
139,871.48x = 193,024.80 × 76,209.26 - Step 4: Simplify right side
139,871.48x = 14,710,277,169.65 - Step 5: Solve for x
x = 14,710,277,169.65/139,871.48 - Step 6: Final answer
x = 105,169.95
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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.