Finding the Fourth Proportional to 180,720.79, 249,396.13 and 100,149.65
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Solution
The fourth proportional to 180,720.79, 249,396.13 and 100,149.65 is: 138,207.32
Step by Step Solution
- Step 1: Write the proportion equation
180,720.79 : 249,396.13 = 100,149.65 : x - Step 2: Convert to fraction form
180,720.79/249,396.13 = 100,149.65/x - Step 3: Cross multiply
180,720.79x = 249,396.13 × 100,149.65 - Step 4: Simplify right side
180,720.79x = 24,976,934,944.30 - Step 5: Solve for x
x = 24,976,934,944.30/180,720.79 - Step 6: Final answer
x = 138,207.32
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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.