Finding the Fourth Proportional to 101,905.98, 140,379.12 and 86,750.07
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Solution
The fourth proportional to 101,905.98, 140,379.12 and 86,750.07 is: 119,501.31
Step by Step Solution
- Step 1: Write the proportion equation
101,905.98 : 140,379.12 = 86,750.07 : x - Step 2: Convert to fraction form
101,905.98/140,379.12 = 86,750.07/x - Step 3: Cross multiply
101,905.98x = 140,379.12 × 86,750.07 - Step 4: Simplify right side
101,905.98x = 12,177,898,486.54 - Step 5: Solve for x
x = 12,177,898,486.54/101,905.98 - Step 6: Final answer
x = 119,501.31
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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.