Finding the Fourth Proportional to 118,946.68, 178,448.74 and 38,990.70
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Solution
The fourth proportional to 118,946.68, 178,448.74 and 38,990.70 is: 58,495.46
Step by Step Solution
- Step 1: Write the proportion equation
118,946.68 : 178,448.74 = 38,990.70 : x - Step 2: Convert to fraction form
118,946.68/178,448.74 = 38,990.70/x - Step 3: Cross multiply
118,946.68x = 178,448.74 × 38,990.70 - Step 4: Simplify right side
118,946.68x = 6,957,841,189.24 - Step 5: Solve for x
x = 6,957,841,189.24/118,946.68 - Step 6: Final answer
x = 58,495.46
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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.