Finding the Fourth Proportional to 130,487.24, 180,159.18 and 100,218.49
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Solution
The fourth proportional to 130,487.24, 180,159.18 and 100,218.49 is: 138,368.17
Step by Step Solution
- Step 1: Write the proportion equation
130,487.24 : 180,159.18 = 100,218.49 : x - Step 2: Convert to fraction form
130,487.24/180,159.18 = 100,218.49/x - Step 3: Cross multiply
130,487.24x = 180,159.18 × 100,218.49 - Step 4: Simplify right side
130,487.24x = 18,055,280,979.24 - Step 5: Solve for x
x = 18,055,280,979.24/130,487.24 - Step 6: Final answer
x = 138,368.17
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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.