Finding the Fourth Proportional to 130,669.49, 180,257.49 and 85,373.99
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Solution
The fourth proportional to 130,669.49, 180,257.49 and 85,373.99 is: 117,772.72
Step by Step Solution
- Step 1: Write the proportion equation
130,669.49 : 180,257.49 = 85,373.99 : x - Step 2: Convert to fraction form
130,669.49/180,257.49 = 85,373.99/x - Step 3: Cross multiply
130,669.49x = 180,257.49 × 85,373.99 - Step 4: Simplify right side
130,669.49x = 15,389,301,090.08 - Step 5: Solve for x
x = 15,389,301,090.08/130,669.49 - Step 6: Final answer
x = 117,772.72
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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.