Finding the Fourth Proportional to 145,971.07, 201,439.99 and 78,903.07
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Solution
The fourth proportional to 145,971.07, 201,439.99 and 78,903.07 is: 108,886.19
Step by Step Solution
- Step 1: Write the proportion equation
145,971.07 : 201,439.99 = 78,903.07 : x - Step 2: Convert to fraction form
145,971.07/201,439.99 = 78,903.07/x - Step 3: Cross multiply
145,971.07x = 201,439.99 × 78,903.07 - Step 4: Simplify right side
145,971.07x = 15,894,233,434.51 - Step 5: Solve for x
x = 15,894,233,434.51/145,971.07 - Step 6: Final answer
x = 108,886.19
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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.