Finding the Fourth Proportional to 145,727.40, 201,108.78 and 85,303.68
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Solution
The fourth proportional to 145,727.40, 201,108.78 and 85,303.68 is: 117,721.99
Step by Step Solution
- Step 1: Write the proportion equation
145,727.40 : 201,108.78 = 85,303.68 : x - Step 2: Convert to fraction form
145,727.40/201,108.78 = 85,303.68/x - Step 3: Cross multiply
145,727.40x = 201,108.78 × 85,303.68 - Step 4: Simplify right side
145,727.40x = 17,155,319,014.31 - Step 5: Solve for x
x = 17,155,319,014.31/145,727.40 - Step 6: Final answer
x = 117,721.99
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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.