Finding the Fourth Proportional to 106,979.30, 147,913.26 and 93,693.26
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Solution
The fourth proportional to 106,979.30, 147,913.26 and 93,693.26 is: 129,543.52
Step by Step Solution
- Step 1: Write the proportion equation
106,979.30 : 147,913.26 = 93,693.26 : x - Step 2: Convert to fraction form
106,979.30/147,913.26 = 93,693.26/x - Step 3: Cross multiply
106,979.30x = 147,913.26 × 93,693.26 - Step 4: Simplify right side
106,979.30x = 13,858,475,526.63 - Step 5: Solve for x
x = 13,858,475,526.63/106,979.30 - Step 6: Final answer
x = 129,543.52
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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.