Finding the Fourth Proportional to 112,557.80, 168,836.70 and 86,313.80
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Solution
The fourth proportional to 112,557.80, 168,836.70 and 86,313.80 is: 129,470.70
Step by Step Solution
- Step 1: Write the proportion equation
112,557.80 : 168,836.70 = 86,313.80 : x - Step 2: Convert to fraction form
112,557.80/168,836.70 = 86,313.80/x - Step 3: Cross multiply
112,557.80x = 168,836.70 × 86,313.80 - Step 4: Simplify right side
112,557.80x = 14,572,937,156.46 - Step 5: Solve for x
x = 14,572,937,156.46/112,557.80 - Step 6: Final answer
x = 129,470.70
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1.5x scale
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.