Finding the Fourth Proportional to 145,919.13, 201,368.34 and 78,851.13
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Solution
The fourth proportional to 145,919.13, 201,368.34 and 78,851.13 is: 108,814.53
Step by Step Solution
- Step 1: Write the proportion equation
145,919.13 : 201,368.34 = 78,851.13 : x - Step 2: Convert to fraction form
145,919.13/201,368.34 = 78,851.13/x - Step 3: Cross multiply
145,919.13x = 201,368.34 × 78,851.13 - Step 4: Simplify right side
145,919.13x = 15,878,121,155.22 - Step 5: Solve for x
x = 15,878,121,155.22/145,919.13 - Step 6: Final answer
x = 108,814.53
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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.